How to remove white spaces from a string in JavaScript

In this tutorial, we are going to learn about how to remove the white spaces from a string using JavaScript.

Consider we have a string with a lot of white spaces.

const str = 'this  is  a  big  old  string';

We can use the replace() method to remove the white spaces from an entire string.

Example:

const str = 'this  is  a  big  old  string';


str.replace(/\s/gi , '')

//"thisisabigoldstring"

In the above code, we have passed two arguments to replace() method the first one is regular expression /\s/gi and the second one is empty string '', so that the replace() will replace the all white-spaces with an empty string(no space).

Similarly, we can also use the following regular expression.

const str = 'this  is  a  big  old  string';


str.replace(/\W/gi , '')

//"thisisabigoldstring"