The toLowerCase() method returns the calling string value converted to lower case.
String.prototype.toLowerCase()
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Syntax
toLowerCase()
Return value
A new string representing the calling string converted to lower case.
Description
The toLowerCase() method returns the value of the string converted to lower case. toLowerCase() does not affect the value of the string str itself.
Examples
Using toLowerCase()
console.log('ALPHABET'.toLowerCase()); // 'alphabet'
Specifications
Browser compatibility
| Desktop | Mobile | Server | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Internet Explorer | Opera | Safari | WebView Android | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | Deno | Node.js | |
toLowerCase |
1
|
12
|
1
|
3
|
3
|
1
|
1
|
18
|
4
|
10.1
|
1
|
1.0
|
1.0
|
0.10.0
|
See also
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Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/toLowerCase
