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    String.prototype.toLocaleUpperCase()

    Summary

    The toLocaleUpperCase() method returns the calling string value converted to upper case, according to any locale-specific case mappings.

    Syntax

    str.toLocaleUpperCase()

    Description

    The toLocaleUpperCase() method returns the value of the string converted to upper case according to any locale-specific case mappings. toLocaleUpperCase() does not affect the value of the string itself. In most cases, this will produce the same result as toUpperCase(), but for some locales, such as Turkish, whose case mappings do not follow the default case mappings in Unicode, there may be a different result.

    Examples

    Example: Using toLocaleUpperCase()

    console.log('alphabet'.toLocaleUpperCase()); // 'ALPHABET'
    

    Specifications

    Specification Status Comment
    ECMAScript 3rd Edition. Standard Initial definition. Implemented in JavaScript 1.2.
    ECMAScript 5.1 (ECMA-262)
    The definition of 'String.prototype.toLocaleUpperCase' in that specification.
    Standard  
    ECMAScript 6 (ECMA-262)
    The definition of 'String.prototype.toLocaleUpperCase' in that specification.
    Release Candidate  

    Browser compatibility

    Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes)
    Feature Android Chrome for Android Firefox Mobile (Gecko) IE Mobile Opera Mobile Safari Mobile
    Basic support (Yes) (Yes) (Yes) (Yes) (Yes) (Yes)

    See also

    Document Tags and Contributors

    Contributors to this page: evilpie, Sheppy, fscholz, Mingun, Brettz9, Norbert
    Last updated by: Mingun,
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