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How to split a string into a specific number of words and put it together as a single sentence in JavaScript

I need to split a big string into 5 words and return a sentence from these 5 words. Example:


// The string that needs to be split
'Hello, this is a very big string that goes on for loooooooooong'

// The output i need
'Hello, this is a very

I know I can use split(' ', 5) to separate the first 5 words, but i don't know how to put them back together into a sentence. Thanks in advance for your help and i you need me to clearer just ask.

about 4 years ago · Juan Pablo Isaza

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Answer 1 · 2022-07-09T05:56:03.045Z

You just need to rejoin the splitted array:

split(' ', 5).join(' ');

Answer 2 · 2022-07-09T05:56:03.054Z

You can easily achieve the result using split, slice and join and using regex /\s+/

const str = "Hello, this is a very big string that goes on for loooooooooong";

const result = str.split(/\s+/).slice(0, 5).join(" ");
console.log(result);

Answer 3 · 2022-07-09T05:56:03.061Z

Using Array.prototype.join() which creates and returns a new string by concatenating all of the elements in an array.

const s = 'Hello, this is a very big string that goes on for loooooooooong';

const str = s.split(' ', 5).join(' ');

console.log(str);

More about Array.prototype.join() - https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/join

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How to split a string into a specific number of words and put it together as a single sentence in JavaScript

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