# JavaScript String trim() Method

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 »

More "Try it Yourself" examples below.

## 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

The numbers in the table specify the first browser version that fully supports the method.

Method |  |  |  |  |
--- | --- | --- | --- | --- | ---
trim() | 10.0 | 9.0 | 3.5 | 5.0 | 10.5

## Syntax

string.trim()

## Parameters

None.

## Technical Details

Return Value: | A String, representing the string with removed whitespace from both ends
JavaScript Version: | 1.8

## More Examples

## Example

For browsers that do not support the trim() 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

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