JavaScript Uppercase
toUpperCase() returns a new string with every character converted to upper case. The original string is left untouched.
Syntax
str.toUpperCase()Examples
| Input | Arguments | Output |
|---|---|---|
| "hello" | — | "HELLO" |
Try it live
Type your input and see Uppercase transform it instantly.
Want to go further? Chain Uppercase with other functions in the visual Playground — pipe one output into the next and watch your data transform.