JavaScript toLowerCase() Method

toLowerCase()The method is used to convert a string to lowercase.

Syntax:

string.toLowerCase()

Example

var　str1　=　"www.oldtoolbag.com";
var　str2　=　str1.toLowerCase();

All browsers fully support the toLowerCase() method:

Method
toLowerCase()	Yes	Yes	Yes	Yes	Yes

Return Value:	New string representing the call to convert to lowercase
JavaScript Version:	ECMAScript 1