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JavaScript - how to split string?

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Created by:

AnnLen

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This article focuses on different ways how to split string to array. JavaScript provides String.prototype.split method that can be used to do it.

1. Splitting string by text

Each string can be splitted in JavaScript with other string.

1.1. Split string by space example

In this example string with single space is used to spltit text to single words.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split(' '); // space character separator used

console.log(array);

1.2. Split string by some text example

This section shows how to split string by some other string.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split('is'); // this character sequence separates string

console.log(array);

1.3. Split string to array of characters example

In this apprach empty string is used to split main string into array of characters.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split(''); // empty separator used

console.log(array);

Note: this approach is strongly not recommended because of unicode characters that can be misinterpreted.

1.4. Split string by space with result size limit example

This section shows how to split string by space limiting output array size to two elements.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split(' ', 2); // maximum result array size will be 2

console.log(array);

2. Split string with regex (regular expression)

Each string can be splitted in JavaScript with regular expresion.

2.1. Split string by white character symbol example

In this example white character symbol is used to spltit text to single words.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split(/\b/); // begin or end of word separates string

console.log(array);

2.2. Split string by white character symbol with result size limit example

In this example white character symbol is used to spltit text to single words limiting output array size to two elements.

// ONLINE-RUNNER:browser;

var text = 'This is some text...';
var array = text.split(/\b/, 2); // maximum result array size will be 2

console.log(array);

3. Split string with `Symbol.split` (with splitter) example

Example how to use splitter is described in this article.

References

String.prototype.split - MDN Docs