How do you reverse words in a string sentence in javascript?

function reverseInPlace(str) {
    var words = [];
    words = str.split("\s+");
    var result = "";
    for (var i = 0; i < words.length; i++) {
        return result += words[i].split('').reverse().join('');
    }
}
console.log(reverseInPlace("abd fhe kdj"))

What I expect is dba ehf jdk, while what I'm getting here is jdk fhe dba. What's the problem?

John Kugelman

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asked Mar 19, 2018 at 10:26

5

This function should work for you:

function myFunction(string) {
    return string.split("").reverse().join("").split(" ").reverse().join(" ")
};

allo

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answered Mar 19, 2018 at 10:42

you need to split the string by space

function reverseInPlace(str) {
  var words = [];
  words = str.match(/\S+/g);
  var result = "";
  for (var i = 0; i < words.length; i++) {
     result += words[i].split('').reverse().join('') + " ";
  }
  return result
}
console.log(reverseInPlace("abd fhe kdj"))

answered Mar 19, 2018 at 10:31

AzadAzad

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3

Split the string into words first before reversing the individual words

var input = "abd fhe kdj";
var output = input.split( " " ).map(  //split into words and iterate via map
     s => s.split("").reverse().join( "" )  //split individual words into characters and then reverse the array of character and join it back
).join( " " ); //join the individual words

answered Mar 19, 2018 at 10:33

gurvinder372gurvinder372

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const reverseWordIntoString = str => str.split(" ").map(word => word.split("").reverse().join('')).join(" ")

const longString = "My name is Vivekanand Panda";
const sentence = "I love to code";


const output = {
  [longString]: reverseWordIntoString(longString),
  [sentence]: reverseWordIntoString(sentence)
}

console.log(output);

answered Sep 8, 2021 at 10:39

You can make use of split and map function to create the reverse words.

You need to first split the sentence using space and then you can just reverse each word and join the reversed words again.

function reverseWord (sentence) {
  return sentence.split(' ').map(function(word) {
    return word.split('').reverse().join('');
  }).join(' ');
}

console.log(reverseWord("abd fhe kdj"));

answered Mar 19, 2018 at 10:36

If you are looking like this o/p : "Javascript is Best" => "Best is Javascript"

Then can be done by simple logic

//sample string
     let str1 = "Javascript is Best";
//breaking into array
     let str1WordArr = str1.split(" ");
//temp array to hold the reverse string      
      let reverseWord=[];
//can iterate the loop backward      
     for(let i=(str1WordArr.length)-1;i>=0;i--)
     {
//pushing the reverse of words into new array
          reverseWord.push(str1WordArr[i]); 
     }
//join the words array 
      console.log(reverseWord.join(" ")); //Best is Javascript

answered May 2, 2020 at 10:06

This solution preserves the whitespaces characters space ␣, the tab \t, the new line \n and the carriage return \r) and preserves their order too (not reversed) :

const sentence = "abd\t fhe kdj";

function reverseWords(sentence) {
    return sentence
        .split(/(\s+)/)
        .map(word => /^\s+$/.test(word) ? word : word.split('').reverse().join(''))
        .join('');
}

console.log(reverseWords(sentence));

answered May 2, 2020 at 10:45

eroakeroak

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If you want to reverse a string by word:
Example: 'Welcome to JavaScript' to 'JavaScript to Welcome'

You can also do something like:
var str = 'Welcome to JavaScript'
function reverseByWord(s){
  return s.split(" ").reverse().join(" ");
}

// Note: There is space in split() and Join() method

reverseByWord(str)
// output will be - JavaScript to Welcome

answered Feb 24, 2021 at 7:14

pradeepkspradeepks

531 silver badge6 bronze badges

You can easily achieve that by the following code

function reverseWords(str) {
    // Go for it
    let reversed;
    let newArray=[];
    reversed = str.split(" ");
    for(var i = 0;i

answered Jul 15, 2021 at 6:54

bilalmohibbilalmohib

2703 silver badges14 bronze badges

the only mistake is while doing split you can do something like:

function reverseInPlace(str) {
    var words = [];
    words = str.split(" ");
    console.log(words);
    var result = "";
    for (var i = 0; i < words.length; i++) {
         result += words[i].split('').reverse().join('') +" ";
    }
    return result
}
console.log(reverseInPlace("abd fhe kdj"))

answered Jul 21 at 7:50

function reverse(str){ var rev=str.split(" ").map(word=>word.split("").reverse().join("")).join(" ") return rev } console.log(reverse("soumya prakash"));

//o/p=>aymuos hsakarp

answered Sep 12 at 7:23

1