Mẫu tích lũy là một cách xây dựng hoặc tích lũy dữ liệu. Ví dụ đơn giản nhất về bộ tích lũy là một vòng lặp trên Mảng số để tính tổng các giá trị của chúng. Ở đây chúng tôi đang giảm một Mảng các phần tử số thành một phần tử số duy nhất
Trước tiên hãy xem xét nó từ cách tiếp cận bắt buộc
const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index gọiconst numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index đánh giá cuộc gọi phương thứcconst numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index trả về một Mảng ________ 16, ________ 368
const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index gọiconst numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index đánh giá lệnh gọi phương thứcconst numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index trả về một Mảng ->const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index đánh giá cuộc gọi phương thức -> trả về một Mảng ký tự Chuỗi
const numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index đánh giá lệnh gọi phương thức -> trả về một Mảng đảo ngược
const numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index đánh giá lệnh gọi phương thức -> trả về một Chuỗi được tạo thành từ các ký tự Chuỗi bị đảo ngược
const numbers = [1, 2, 3, 4]; const getNewSum = [previousSum, currentElement] => { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const reduceSum = [arr, accumulatorCallback, initialValue] => { for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index { return previousSum + currentElement; } const numbers = [1, 2, 3, 4]; let sum = 0; for [let index = 0; index