String.prototype.toLowerCase() - JavaScript | MDN
Try it
const sentence = "The quick brown fox jumps over the lazy dog.";
console.log(sentence.toLowerCase());
// Expected output: "the quick brown fox jumps over the lazy dog."
Syntax
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® 2027 Language Specification # sec-string.prototype.tolowercase |