String.prototype.toLowerCase()
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The toLowerCase() method of String values returns this string converted to lower case.
Try it
Syntax
js
toLowerCase()
Parameters
None.
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()
js
console.log("ALPHABET".toLowerCase()); // 'alphabet'
Specifications
| Specification |
|---|
| ECMAScript Language Specification # sec-string.prototype.tolowercase |
Browser compatibility
BCD tables only load in the browser