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JavaScript String toUpperCase()
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Convert to uppercase: let text = "Hello World!"; let result = text.toUpperCase(); Try it Yourself » DescriptionThe toUpperCase() method converts a string to uppercase letters. The toUpperCase() method does not change the original string. See Also:The toLowerCase() Method The toLocaleLowerCase() Method The toLocaleUpperCase() Method Syntax string.toUpperCase() Parameters NONE Return Value Type Description A stringThe string converted to uppercase. Related PagesJavaScript Strings JavaScript String Methods JavaScript String Search Browser SupporttoUpperCase() is an ECMAScript1 (ES1) feature. ES1 (JavaScript 1997) is fully supported in all browsers: Chrome Edge Firefox Safari Opera IE Yes Yes Yes Yes Yes Yes ❮ Previous JavaScript String Reference Next ❯ |
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