The toUpperCase() method is member of class String. This function converts all the characters of a string into uppercase.
Here is an example program with output:
<!DOCTYPE html>
<html>
<head>
<title>JavaScript:toUpperCase() method</title>
<meta charset="utf-8">
</head>
<body>
<script>
var myName = "Raju";
// convert to uppercase and display
console.log(myName.toUpperCase());
//Output = RAJU
</script>
</body>
</html>Output of the Above Program
RAJU