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JavaScript String toLowerCase() Method

JavaScript String Reference JavaScript String Reference

Example

Convert the string to lowercase letters:

var str = "Hello World!";
var res = str.toLowerCase();

The result of res will be:

hello world!

Try it yourself »


Definition and Usage

The toLowerCase() method converts a string to lowercase letters.

Note: The toLowerCase() method does not change the original string.

Tip: Use the toUpperCase() method to convert a string to uppercase letters.


Browser Support

Internet Explorer Firefox Opera Google Chrome Safari

The toLowerCase() method is supported in all major browsers.


Syntax

string.toLowerCase()

Parameters

None.

Return Value

Type Description
String The value of a string converted to lowercase

Technical Details

JavaScript Version: 1.0


JavaScript String Reference JavaScript String Reference

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