JavaScript String toLocaleUpperCase()
Example
Convert the string to uppercase letters:
let str = "Hello World!";
let res = str.toLocaleUpperCase();
Try it Yourself »
Definition and Usage
The toLocaleUpperCase() method converts a string to uppercase 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
toUpperCase() method. However, for some
locales, where language conflict with the regular Unicode case
mappings occurs (such as Turkish), the results may vary.
The toLocaleUpperCase() method does not change the original string.
Tip: Use the toLocaleLowerCase()
method to convert a string to lowercase.
Browser Support
toLocalUpperCase() is fully supported in all browsers:
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Yes | Yes | Yes | Yes | Yes | Yes |
Syntax
string.toLocaleUpperCase()
Parameters
| None. |
Technical Details
| Return Value: | A String, representing the value of a string converted to uppercase according to the host's current locale |
|---|---|
| JavaScript Version: | ECMAScript 1 |
