JavaScript String trim() Method
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
