String toUpperCase()

toUpperCase() converts string to upper case.

 
<!DOCTYPE html>
<html>
<head>
    <title>Example</title>
    <script type="text/javascript">
    
        var stringValue = "hello world"; 
        document.writeln(stringValue.toUpperCase()); //"HELLO WORLD" 

       
    </script>
</head>
<body>
</body>
</html>
  
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String:
  1. The String Type
  2. String length property
  3. String charAt()
  4. String charCodeAt()
  5. String concat()
  6. String slice()
  7. String substr()
  8. String substring()
  9. String indexOf()
  10. String lastIndexOf()
  11. String trim() Method
  12. String toLowerCase()
  13. String toLocaleLowerCase()
  14. String toUpperCase()
  15. String toLocaleUpperCase()
  16. String match()
  17. String search()
  18. String replace()
  19. String split()
  20. String localeCompare() Method
  21. String fromCharCode() Method
  22. String HTML Methods