JavaScript String toUpperCase()
Example
Convert to uppercase:
let text = "Hello World!";
let result = text.toUpperCase();
Try it Yourself »
let result = text.toUpperCase();
Description
The toUpperCase() method converts a string to uppercase letters.
The toUpperCase() method does not change the original string.
Syntax
string.toUpperCase()
Parameters
NONE
Return Value
Type
Description
A string The string converted to uppercase.
Browser Support
toUpperCase() is an ECMAScript1 (JavaScript 1997) feature.
It is supported in all browsers:
| Chrome | Edge | Firefox | Safari | Opera | IE |
| Yes | Yes | Yes | Yes | Yes | Yes |