Javascript String toUpperCase()

 const message = "javascript is fun"; 
// convert message to uppercase const upperMessage = message.toUpperCase();
 console.log(upperMessage); // Output: JAVASCRIPT IS FUN

toUpperCase() Syntax

The syntax of the toUpperCase() method is:

 str.toUpperCase()

Here, str is a string.

toUpperCase() Parameters

The toUpperCase() method does not take in any parameters.

toUpperCase() Return Value

• Returns a new string representing the calling string converted to uppercase.

Example: Using toUpperCase() method

 let str = "Hello World!"; let sentence = "Java is to JavaScript what Car is to Carpet."; 
let uppercase_str = str.toUpperCase();
 console.log(uppercase_str); // HELLO WORLD! 
let uppercase = sentence.toUpperCase();
 console.log(uppercase); // JAVA IS TO JAVASCRIPT WHAT CAR IS TO CARPET.

Output

 HELLO WORLD! JAVA IS TO JAVASCRIPT WHAT CAR IS TO CARPET.

Also Read:

• JavaScript String toLowerCase()
• JavaScript Program to Convert the First Letter of a String into UpperCase