JavaScript String toLocaleUpperCase() method
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Definition and usage
toLocaleUpperCase() The method uses the current language environment to convert the string to uppercase letters.
The current language environment is based on the browser's language settings.
toLocaleUpperCase() The method does not change the original string.
toLocaleUpperCase() Returns with toUpperCase() The same result, except for language environments that conflict with the conventional Unicode case mapping (such as Turkish).
See also:
Example
Convert to uppercase:
let text = "Hello World!"; let result = text.toLocaleUpperCase();
Syntax
string.toLocaleUpperCase()
Parameter
No parameters.
Return value
| Type | Description |
|---|---|
| String. | Convert to uppercase new string based on the current language environment. |
Note:The return value of this method is string A copy of it, converted to lowercase letters in the local way. Only a few languages (such as Turkish) have locale-specific case mappings, so the return value of this method is usually the same as toUpperCase() The same.
Browser support
toLocalUpperCase() Is ECMAScript1 (ES1) feature.
All browsers fully support ES1 (JavaScript 1997):
| Chrome | IE | Edge | Firefox | Safari | Opera |
|---|---|---|---|---|---|
| Chrome | IE | Edge | Firefox | Safari | Opera |
| Support | Support | Support | Support | Support | Support |
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