JavaScript String toUpperCase() Method
Example
Convert the string to uppercase letters:
var str = "Hello World!";
var res = str.toUpperCase();
Try it Yourself »
Definition and Usage
The toUpperCase() method converts a string to uppercase letters.
Note: The toUpperCase() method does not change the original string.
Tip: Use the toLowerCase() method to convert a string to lowercase letters.
Browser Support
| Method | |||||
|---|---|---|---|---|---|
| toUpperCase() | Yes | Yes | Yes | Yes | Yes |
Syntax
string.toUpperCase()
Parameters
| None. |
Technical Details
| Return Value: | A String, representing the value of a string converted to uppercase |
|---|---|
| JavaScript Version: | ECMAScript 1 |
