JavaScript String trim() Method
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JavaScript String trim() Method
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Reference
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Remove whitespace from both sides of a string:
var str = " Hello World! ";
alert(str.trim());
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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. |
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Technical Details
| Return Value: | A String, representing the string with removed whitespace from both ends |
|---|---|
| JavaScript Version: | ECMAScript 5 |
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+
function myFunction()
var str = myTrim(" Hello World! ");
alert(str);
Try it Yourself »
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Reference
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