Hướng dẫn what is buffer size in javascript? - kích thước bộ đệm trong javascript là gì?

Bộ đệm và mã hóa ký tự##

Khi chuyển đổi giữa

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

const buf = Buffer.from('hello world', 'utf8');

console.log(buf.toString('hex'));
// Prints: 68656c6c6f20776f726c64
console.log(buf.toString('base64'));
// Prints: aGVsbG8gd29ybGQ=

console.log(Buffer.from('fhqwhgads', 'utf8'));
// Prints: 
console.log(Buffer.from('fhqwhgads', 'utf16le'));
// Prints: const { Buffer } = require('node:buffer');

const buf = Buffer.from('hello world', 'utf8');

console.log(buf.toString('hex'));
// Prints: 68656c6c6f20776f726c64
console.log(buf.toString('base64'));
// Prints: aGVsbG8gd29ybGQ=

console.log(Buffer.from('fhqwhgads', 'utf8'));
// Prints: 
console.log(Buffer.from('fhqwhgads', 'utf16le'));
// Prints: 

Bộ đệm Node.js chấp nhận tất cả các biến thể trường hợp của các chuỗi mã hóa mà họ nhận được. Ví dụ, UTF-8 có thể được chỉ định là

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

Các mã hóa ký tự hiện được hỗ trợ bởi Node.js là như sau:

• console.log(buff.toString().length);
  

  14 (Bí danh:

  console.log(buff.toString().length);
  

  18): Các ký tự unicode được mã hóa đa byte. Nhiều trang web và các định dạng tài liệu khác sử dụng UTF-8. Đây là mã hóa ký tự mặc định. Khi giải mã

  console.log(buff.toString().length);
  

  06 thành một chuỗi không chứa dữ liệu UTF-8 hợp lệ, ký tự thay thế Unicode

  console.log(buff.toString().length);
  

  20 sẽ được sử dụng để biểu thị các lỗi đó.

• console.log(buff.toString().length);
  

  21 (bí danh:

  console.log(buff.toString().length);
  

  22): Các ký tự unicode được mã hóa đa byte. Không giống như

  console.log(buff.toString().length);
  

  14, mỗi ký tự trong chuỗi sẽ được mã hóa bằng 2 hoặc 4 byte. Node.js chỉ hỗ trợ biến thể Little-endian của UTF-16.

• console.log(buff.toString().length);
  

  24: Latin-1 là viết tắt của ISO-8859-1. Ký tự này mã hóa chỉ hỗ trợ các ký tự Unicode từ

  console.log(buff.toString().length);
  

  25 đến

  console.log(buff.toString().length);
  

  26. Mỗi ký tự được mã hóa bằng một byte duy nhất. Các ký tự không phù hợp với phạm vi đó bị cắt cụt và sẽ được ánh xạ tới các ký tự trong phạm vi đó.

Chuyển đổi

console.log(buff.toString().length);

console.log(buff.toString().length);

Node.js cũng hỗ trợ các mã hóa nhị phân từ văn bản sau. Đối với các mã hóa nhị phân sang văn bản, quy ước đặt tên được đảo ngược: Chuyển đổi

console.log(buff.toString().length);

console.log(buff.toString().length);

• console.log(buff.toString().length);
  

  31: Mã hóa Base64. Khi tạo

  console.log(buff.toString().length);
  

  06 từ một chuỗi, mã hóa này cũng sẽ chấp nhận chính xác "bảng chữ cái an toàn của URL và tên tệp" như được chỉ định trong RFC 4648, phần 5. Các ký tự khoảng trắng như không gian, tab và các dòng mới có trong chuỗi được mã hóa cơ sở64 bị bỏ qua .

• console.log(buff.toString().length);
  

  33: Mã hóa base64URL như được chỉ định trong RFC 4648, Phần 5. Khi tạo

  console.log(buff.toString().length);
  

  06 từ một chuỗi, mã hóa này cũng sẽ chấp nhận chính xác các chuỗi được mã hóa cơ sở chính xác. Khi mã hóa

  console.log(buff.toString().length);
  

  06 thành một chuỗi, mã hóa này sẽ bỏ qua phần đệm.

• console.log(buff.toString().length);
  

  36: Mã hóa từng byte là hai ký tự thập lục phân. Cắt ngắn dữ liệu có thể xảy ra khi giải mã các chuỗi không chỉ bao gồm số lượng ký tự thập lục phân chẵn. Xem ví dụ bên dưới.

Các mã hóa ký tự kế thừa sau đây cũng được hỗ trợ:

• console.log(buff.toString().length);
  

  37: Chỉ cho dữ liệu ASCII 7 bit. Khi mã hóa một chuỗi thành

  console.log(buff.toString().length);
  

  06, điều này tương đương với việc sử dụng

  console.log(buff.toString().length);
  

  24. Khi giải mã

  console.log(buff.toString().length);
  

  06 thành một chuỗi, sử dụng mã hóa này cũng sẽ không đặt phần cao nhất của mỗi byte trước khi giải mã là

  console.log(buff.toString().length);
  

  24. Nói chung, không có lý do gì để sử dụng mã hóa này, vì

  console.log(buff.toString().length);
  

  14 (hoặc, nếu dữ liệu được biết là luôn luôn là ASCII-chỉ,

  console.log(buff.toString().length);
  

  24) sẽ là lựa chọn tốt hơn khi mã hóa hoặc giải mã văn bản ASCII-chỉ. Nó chỉ được cung cấp cho khả năng tương thích kế thừa.

• console.log(buff.toString().length);
  

  44: Bí danh cho

  console.log(buff.toString().length);
  

  24. Xem chuỗi nhị phân để biết thêm nền tảng về chủ đề này. Tên của mã hóa này có thể rất sai lệch, vì tất cả các mã hóa được liệt kê ở đây chuyển đổi giữa các chuỗi và dữ liệu nhị phân. Để chuyển đổi giữa các chuỗi và

  console.log(buff.toString().length);
  

  06, thông thường

  console.log(buff.toString().length);
  

  14 là lựa chọn đúng đắn.

• console.log(buff.toString().length);
  

  48,

  console.log(buff.toString().length);
  

  49: Bí danh của

  console.log(buff.toString().length);
  

  21. UCS-2 được sử dụng để chỉ một biến thể của UTF-16 không hỗ trợ các ký tự có điểm mã lớn hơn U+FFFF. Trong Node.js, các điểm mã này luôn được hỗ trợ.

import { Buffer } from 'node:buffer';

Buffer.from('1ag123', 'hex');
// Prints , data truncated when first non-hexadecimal value
// ('g') encountered.

Buffer.from('1a7', 'hex');
// Prints , data truncated when data ends in single digit ('7').

Buffer.from('1634', 'hex');
// Prints , all data represented.const { Buffer } = require('node:buffer');

Buffer.from('1ag123', 'hex');
// Prints , data truncated when first non-hexadecimal value
// ('g') encountered.

Buffer.from('1a7', 'hex');
// Prints , data truncated when data ends in single digit ('7').

Buffer.from('1634', 'hex');
// Prints , all data represented.

Các trình duyệt web hiện đại tuân theo tiêu chuẩn mã hóa WhatWG, bí danh cả

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

Bộ đệm và typedarrays##

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

Đặc biệt:

• Trong khi

  console.log(buff.toString().length);
  

  64 tạo ra một bản sao của một phần của

  console.log(buff.toString().length);
  

  59,

  console.log(buff.toString().length);
  

  66 tạo ra một chế độ xem trên

  console.log(buff.toString().length);
  

  06 hiện có mà không cần sao chép. Hành vi này có thể đáng ngạc nhiên, và chỉ tồn tại cho khả năng tương thích di sản.

  console.log(buff.toString().length);
  

  68 có thể được sử dụng để đạt được hành vi của

  console.log(buff.toString().length);
  

  66 trên cả

  console.log(buff.toString().length);
  

  06S và các

  console.log(buff.toString().length);
  

  59 khác và nên được ưu tiên.

• console.log(buff.toString().length);
  

  72 không tương thích với

  console.log(buff.toString().length);
  

  59 tương đương.
• Một số phương pháp, ví dụ:

  console.log(buff.toString().length);
  

  74, hỗ trợ các đối số bổ sung.

Có hai cách để tạo các phiên bản

console.log(buff.toString().length);

console.log(buff.toString().length);

• Chuyển

  console.log(buff.toString().length);
  

  06 cho hàm tạo

  console.log(buff.toString().length);
  

  59 sẽ sao chép nội dung ____10106, được hiểu là một loạt các số nguyên, chứ không phải là chuỗi byte của loại mục tiêu.

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3, 4]);
const uint32array = new Uint32Array(buf);

console.log(uint32array);

// Prints: Uint32Array(4) [ 1, 2, 3, 4 ]const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3, 4]);
const uint32array = new Uint32Array(buf);

console.log(uint32array);

// Prints: Uint32Array(4) [ 1, 2, 3, 4 ]

• Vượt qua

  console.log(buff.toString().length);
  

  06 bên dưới

  console.log(buff.toString().length);
  

  81 sẽ tạo ra một

  console.log(buff.toString().length);
  

  59 chia sẻ bộ nhớ của nó với

  console.log(buff.toString().length);
  

  06.

import { Buffer } from 'node:buffer';

const buf = Buffer.from('hello', 'utf16le');
const uint16array = new Uint16Array(
  buf.buffer,
  buf.byteOffset,
  buf.length / Uint16Array.BYTES_PER_ELEMENT);

console.log(uint16array);

// Prints: Uint16Array(5) [ 104, 101, 108, 108, 111 ]const { Buffer } = require('node:buffer');

const buf = Buffer.from('hello', 'utf16le');
const uint16array = new Uint16Array(
  buf.buffer,
  buf.byteOffset,
  buf.length / Uint16Array.BYTES_PER_ELEMENT);

console.log(uint16array);

// Prints: Uint16Array(5) [ 104, 101, 108, 108, 111 ]

Có thể tạo một

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

const arr = new Uint16Array(2);

arr[0] = 5000;
arr[1] = 4000;

// Copies the contents of `arr`.
const buf1 = Buffer.from(arr);

// Shares memory with `arr`.
const buf2 = Buffer.from(arr.buffer);

console.log(buf1);
// Prints: 
console.log(buf2);
// Prints: 

arr[1] = 6000;

console.log(buf1);
// Prints: 
console.log(buf2);
// Prints: const { Buffer } = require('node:buffer');

const arr = new Uint16Array(2);

arr[0] = 5000;
arr[1] = 4000;

// Copies the contents of `arr`.
const buf1 = Buffer.from(arr);

// Shares memory with `arr`.
const buf2 = Buffer.from(arr.buffer);

console.log(buf1);
// Prints: 
console.log(buf2);
// Prints: 

arr[1] = 6000;

console.log(buf1);
// Prints: 
console.log(buf2);
// Prints: 

Khi tạo

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

const arr = new Uint16Array(20);
const buf = Buffer.from(arr.buffer, 0, 16);

console.log(buf.length);
// Prints: 16const { Buffer } = require('node:buffer');

const arr = new Uint16Array(20);
const buf = Buffer.from(arr.buffer, 0, 16);

console.log(buf.length);
// Prints: 16

console.log(buff.toString().length);

console.log(buff.toString().length);

console.log(buff.toString().length);

• console.log(buff.toString().length);
  

  99

Tuy nhiên, phương pháp

console.log(buff.toString().length);

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  01

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  02

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  03

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  04

Bộ đệm và lặp lại##

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

const buf = Buffer.from([1, 2, 3]);

for (const b of buf) {
  console.log(b);
}
// Prints:
//   1
//   2
//   3const { Buffer } = require('node:buffer');

const buf = Buffer.from([1, 2, 3]);

for (const b of buf) {
  console.log(b);
}
// Prints:
//   1
//   2
//   3

Ngoài ra, các phương pháp

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

Lớp: ________ 210##

Một

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

12##

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  13 | | | | Một mảng chuỗi ,, hoặc các đối tượng hoặc bất kỳ hỗn hợp nào của các đối tượng đó, sẽ được lưu trữ trong

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  10.

• import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  15

  • import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    16 Một trong hai

    import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    17 hoặc

    import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    18. Khi được đặt thành

    import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    18, các đầu dòng trong các phần nguồn chuỗi sẽ được chuyển đổi thành kết thúc dòng gốc nền tảng theo quy định của

    import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    20.

  • import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    21 Loại nội dung Blob. Mục đích là dành cho

    import { Buffer } from 'node:buffer';
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
    
    // Creates a zero-filled Buffer of length 10.
    const buf1 = Buffer.alloc(10);
    
    // Creates a Buffer of length 10,
    // filled with bytes which all have the value `1`.
    const buf2 = Buffer.alloc(10, 1);
    
    // Creates an uninitialized buffer of length 10.
    // This is faster than calling Buffer.alloc() but the returned
    // Buffer instance might contain old data that needs to be
    // overwritten using fill(), write(), or other functions that fill the Buffer's
    // contents.
    const buf3 = Buffer.allocUnsafe(10);
    
    // Creates a Buffer containing the bytes [1, 2, 3].
    const buf4 = Buffer.from([1, 2, 3]);
    
    // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
    // are all truncated using `(value & 255)` to fit into the range 0–255.
    const buf5 = Buffer.from([257, 257.5, -255, '1']);
    
    // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
    // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
    // [116, 195, 169, 115, 116] (in decimal notation)
    const buf6 = Buffer.from('tést');
    
    // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
    const buf7 = Buffer.from('tést', 'latin1');

    21 để truyền tải loại phương tiện MIME của dữ liệu, tuy nhiên không có xác thực nào về định dạng loại được thực hiện.

Tạo một đối tượng

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

,, và các nguồn được sao chép vào 'blob' và do đó có thể được sửa đổi một cách an toàn sau khi 'blob' được tạo.

Các nguồn chuỗi được mã hóa dưới dạng chuỗi byte UTF-8 và được sao chép vào Blob. Các cặp thay thế chưa từng có trong mỗi phần chuỗi sẽ được thay thế bằng các ký tự thay thế Unicode U+FFFD.

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

24##

Đã thêm vào: v15.7.0, v14.18.0

• Trả lại:

Trả về một lời hứa đáp ứng với một bản sao của dữ liệu

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

26##

Đã thêm vào: v15.7.0, v14.18.0

Trả lại:

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

28##

Đã thêm vào: v15.7.0, v14.18.0

• Trả lại:
• Trả về một lời hứa đáp ứng với một bản sao của dữ liệu

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  10.
• Tổng kích thước của

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  10 trong byte.

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

36##

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

• Trả lại:

Trả về một lời hứa đáp ứng với một bản sao của dữ liệu

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

39##

Đã thêm vào: v15.7.0, v14.18.0

• Trả lại:

Trả về một lời hứa đáp ứng với một bản sao của dữ liệu

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

41##

Đã thêm vào: v15.7.0, v14.18.0

• Trả lại:

Trả về một lời hứa đáp ứng với một bản sao của dữ liệu

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

Tổng kích thước của

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

10 trong byte.#

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

console.log(buff.toString().length);

import { Buffer } from 'node:buffer'; // Creates a zero-filled Buffer of length 10. const buf1 = Buffer.alloc(10); // Creates a Buffer of length 10, // filled with bytes which all have the value `1`. const buf2 = Buffer.alloc(10, 1); // Creates an uninitialized buffer of length 10. // This is faster than calling Buffer.alloc() but the returned // Buffer instance might contain old data that needs to be // overwritten using fill(), write(), or other functions that fill the Buffer's // contents. const buf3 = Buffer.allocUnsafe(10); // Creates a Buffer containing the bytes [1, 2, 3]. const buf4 = Buffer.from([1, 2, 3]); // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries // are all truncated using `(value & 255)` to fit into the range 0–255. const buf5 = Buffer.from([257, 257.5, -255, '1']); // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést': // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation) // [116, 195, 169, 115, 116] (in decimal notation) const buf6 = Buffer.from('tést'); // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74]. const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer'); // Creates a zero-filled Buffer of length 10. const buf1 = Buffer.alloc(10); // Creates a Buffer of length 10, // filled with bytes which all have the value `1`. const buf2 = Buffer.alloc(10, 1); // Creates an uninitialized buffer of length 10. // This is faster than calling Buffer.alloc() but the returned // Buffer instance might contain old data that needs to be // overwritten using fill(), write(), or other functions that fill the Buffer's // contents. const buf3 = Buffer.allocUnsafe(10); // Creates a Buffer containing the bytes [1, 2, 3]. const buf4 = Buffer.from([1, 2, 3]); // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries // are all truncated using `(value & 255)` to fit into the range 0–255. const buf5 = Buffer.from([257, 257.5, -255, '1']); // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést': // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation) // [116, 195, 169, 115, 116] (in decimal notation) const buf6 = Buffer.from('tést'); // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74]. const buf7 = Buffer.from('tést', 'latin1');30 Chỉ số kết thúc.#

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

Tạo và trả về một

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

10 mới chứa một tập hợp con của dữ liệu đối tượng

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

10 này. Các

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

10 ban đầu không bị thay đổi.#

• Đã thêm vào: v16.7.0
• Trả về một

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  37 mới cho phép đọc nội dung của

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  10 được đọc.Default:

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  56.
• Trả về một lời hứa đáp ứng nội dung của

  import { Buffer } from 'node:buffer';
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');
  
  // Creates a zero-filled Buffer of length 10.
  const buf1 = Buffer.alloc(10);
  
  // Creates a Buffer of length 10,
  // filled with bytes which all have the value `1`.
  const buf2 = Buffer.alloc(10, 1);
  
  // Creates an uninitialized buffer of length 10.
  // This is faster than calling Buffer.alloc() but the returned
  // Buffer instance might contain old data that needs to be
  // overwritten using fill(), write(), or other functions that fill the Buffer's
  // contents.
  const buf3 = Buffer.allocUnsafe(10);
  
  // Creates a Buffer containing the bytes [1, 2, 3].
  const buf4 = Buffer.from([1, 2, 3]);
  
  // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
  // are all truncated using `(value & 255)` to fit into the range 0–255.
  const buf5 = Buffer.from([257, 257.5, -255, '1']);
  
  // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
  // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
  // [116, 195, 169, 115, 116] (in decimal notation)
  const buf6 = Buffer.from('tést');
  
  // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
  const buf7 = Buffer.from('tést', 'latin1');

  10 được giải mã dưới dạng chuỗi UTF-8.Default:

  console.log(buff.toString().length);
  

  14.

Loại hình:

console.log(buff.toString().length);

Loại nội dung của

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

console.log(buff.toString().length);

Khi một đối tượng được tạo, nó có thể được gửi qua

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

console.log(buff.toString().length);

Lớp: ________ 106#

Lớp

console.log(buff.toString().length);

Phương pháp tĩnh: ________ 251##

• Đã thêm vào: v16.7.0

Phân bổ một

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

Bộ nhớ cơ bản cho các trường hợp

console.log(buff.toString().length);

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

console.log(buff.toString().length);

console.log(buff.toString().length);

A

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

Mô-đun

console.log(buff.toString().length);

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');

import { Buffer } from 'node:buffer';

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');const { Buffer } = require('node:buffer');

// Creates a zero-filled Buffer of length 10.
const buf1 = Buffer.alloc(10);

// Creates a Buffer of length 10,
// filled with bytes which all have the value `1`.
const buf2 = Buffer.alloc(10, 1);

// Creates an uninitialized buffer of length 10.
// This is faster than calling Buffer.alloc() but the returned
// Buffer instance might contain old data that needs to be
// overwritten using fill(), write(), or other functions that fill the Buffer's
// contents.
const buf3 = Buffer.allocUnsafe(10);

// Creates a Buffer containing the bytes [1, 2, 3].
const buf4 = Buffer.from([1, 2, 3]);

// Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
// are all truncated using `(value & 255)` to fit into the range 0–255.
const buf5 = Buffer.from([257, 257.5, -255, '1']);

// Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
// [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
// [116, 195, 169, 115, 116] (in decimal notation)
const buf6 = Buffer.from('tést');

// Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
const buf7 = Buffer.from('tést', 'latin1');