How to convert a string to lowercase in JavaScript

by Sai gowtham  1 Min read

JavaScript provides the toLowerCase( ) method which helps us to convert the string to lower case letters.

we need to chain the string with the toLowerCase( ) method.

const name = "JAVASCRIPT";

console.log(name.toLowerCase());

// "javascript"

How to lowercase the first letter of a string ?

To lowercase the first letter, we need to take the first letter in the string by using the charAt method then chain it to toLowerCase method and concat with the string by slicing the first letter.

const name = "JAVASCRIPT";

console.log( name.charAt(0).toLowerCase()+name.slice(1));

// "jAVASCRIPT"

Note: the toLowerCase method doesn’t mutate the original string instead of it returns the new string with the lower case letters.