.toUpperCase()

Anonymous contributors
Anonymous contributors
Published Jun 19, 2021Updated Sep 3, 2021
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Convert a string to uppercase letters.

Syntax

string.toUpperCase();

Example 1

Converting lowercase letters to uppercase:

console.log('hello world'.toLowerCase());
// Output: HELLO WORLD

Example 2

Don’t forget that .toUpperCase() doesn’t actually change the original string.

Code
Output
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