Trim a string in JavaScript

By Samim Raja Mollick

In this tutorial, I am going to discuss about three different string methods those are trim(), trimstart(), and trimend(). Those three methods are going to be used to remove the whitespace from both sides of a string or from the start or from the end.

By whitespace, I am talking about all the whitespace characters (no-break space, tab, space, etc..), and all the line terminator characters (CR, LF, etc..). These methods does not change or modify the original string, always returns a new string.

trim() method

This method removes whitespace from both sides of the string and returns a new string.

let string = '   Hey Codespeedy   ';
    console.log(string.trim());

As you can see in the above program, I have declared a variable named stringand assigned the string value ‘Hey Codespeedy’. Then I have called trim()method to remove the whitespace from both sides of the string.

Output

'Hey Codespeedy'

let string = '   Hey Codespeedy   '; 
    console.log(string.trimStart());

'Hey Codespeedy      '

let string = '    Hey Codespeedy   '; 
    console.log(string.trimEnd());

'      Hey Codespeedy'