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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

Method
toLowerCase() Yes Yes Yes Yes Yes


Syntax

string.toLowerCase()

Parameters

None.

Technical Details

Return Value: A String, representing the value of a string converted to lowercase
JavaScript Version: 1.0


JavaScript String Reference JavaScript String Reference

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