The toLowerCase()
method returns the calling string value converted to lower case.
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Syntax
str.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
Specification |
---|
ECMAScript (ECMA-262) The definition of 'String.prototype.toLowerCase' in that specification. |
Browser compatibility
The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | Server | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|
toLowerCase | Chrome Full support 1 | Edge Full support 12 | Firefox Full support 1 | IE Full support 3 | Opera Full support 3 | Safari Full support 1 | WebView Android Full support 1 | Chrome Android Full support 18 | Firefox Android Full support 4 | Opera Android Full support 10.1 | Safari iOS Full support 1 | Samsung Internet Android Full support 1.0 | nodejs Full support 0.1.100 |
Legend
- Full support
- Full support