# JavaScript String toLocaleLowerCase() Method

JavaScript String Reference

## Example

Convert the string to lowercase letters:

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

The result of res could be:

hello world!
Try it yourself »

## Definition and Usage

The toLocaleLowerCase() method converts a string to lowercase letters, according to the host's current locale.

The locale is based on the language settings of the browser.

Generally, this method returns the same result as the toLowerCase() method. However, for some locales, where language conflict with the regular Unicode case mappings occurs (such as Turkish), the results may vary.

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

Tip: Use the toLocaleUpperCase() method to convert a string to uppercase letters, according to the host's current locale.

## Browser Support

Method |  |  |  |  |
--- | --- | --- | --- | --- | ---
toLocaleLowerCase() | Yes | Yes | Yes | Yes | Yes

## Syntax

string.toLocaleLowerCase()

## Parameters

None.

## Technical Details

Return Value: | A String, representing the value of a string converted to lowercase according to the host's current locale
JavaScript Version: | 1.2

JavaScript String Reference

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