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JavaScript String trim() Method

JavaScript String Reference JavaScript String Reference

Example

Remove whitespace from both sides of a string:

var str = "       Hello World!        ";
alert(str.trim());

The alert box will display:

Hello World!

Try it yourself »


Definition and Usage

The trim() method removes whitespace from both sides of a string.

Note: The trim() method does not change the original string.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The trim() method is supported in all major browsers.

Note: The trim() method is not supported in Internet Explorer 8 and earlier versions.


Syntax

string.trim()

Parameters

None.

Return Value

Type Description
String The string with removed whitespace

Technical Details

JavaScript Version: 1.8


More Examples

Example

For browsers that do not support this method, you can remove whitespaces from both sides of a string with a regular expression:

function myTrim(x) {
    return x.replace(/^\s+|\s+$/gm,'');
}

function myFunction() {
    var str = myTrim("        Hello World!        ");
    alert(str);
}

Try it yourself »


JavaScript String Reference JavaScript String Reference

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