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Non-standard
This feature is non-standard and is not on a standards track. Do not use it on production sites facing the Web: it will not work for every user. There may also be large incompatibilities between implementations and the behavior may change in the future.
The trimLeft() method removes whitespace from the left end of a string.
Syntax
str.trimLeft()Return value
A new string representing the calling string stripped of whitespace from its left end.
Description
The trimLeft() method returns the string stripped of whitespace from its left end. trimLeft() does not affect the value of the string itself.
Examples
Using trimLeft()
The following example displays the lowercase string 'foo ':
var str = ' foo '; console.log(str.length); // 8 str = str.trimLeft(); console.log(str.length); // 5 console.log(str); // 'foo '
Specifications
Not part of any standard. Implemented in JavaScript 1.8.1.
Browser compatibility
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|
| Basic support | (Yes) | 3.5 (1.9.1) | No support | ? | ? |
| Feature | Android | Chrome for Android | Firefox Mobile (Gecko) | IE Mobile | Opera Mobile | Safari Mobile |
|---|---|---|---|---|---|---|
| Basic support | ? | ? | (Yes) | ? | ? | ? |