JavaScript toUpperCase | Method converts a string to uppercase letters

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Using JavaScript toUpperCase() method you can convert a string to uppercase letters. This method does not change the original string. This method returns the string converted to uppercase.

string.toUpperCase()
console.log('alphabet'.toUpperCase()); // 'ALPHABET'

Example JavaScript toUpperCase

Simple example code.

<!DOCTYPE html>
<html>
<body>

  <script>
    let text = "Hello World! toUpperCase";
    let result = text.toUpperCase();

    console.log(result)
  </script>

</body>
</html> 

Output:

JavaScript toUpperCase Method

Do comment if you have any doubts or suggestions on this JS basic method.

Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.

OS: Windows 10

Code: HTML 5 Version

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