What is toLowerCase () used for in JavaScript ?

The toLowerCase() command in JavaScript is used to convert a string to lowercase letters. It’s a method that you can apply to a string, and it will return a new string with all the alphabetic characters converted to lowercase.

Example: Here, we have used toLowerCase() to convert myString to lowercase.

Javascript

let myString = "Hello, World!";
let lowercaseString = myString.toLowerCase();

console.log(lowercaseString);

Output

hello, world!