JavaScript Tutorial/String/toUpperCase
Convert String to upper case
<html>
<head>
<title>Convert String to upper case</title>
<script type="text/javascript" language="javascript">
<!-- //
onload = function(){
var s = new String("aaA");
var upperCase = s.toUpperCase();
document.write(upperCase);
}
// -->
</script>
</head>
<body>
</body>
</html>
string.toUpperCase()
The toUpperCase() method converts the characters to all uppercase values.
<html>
<script language="JavaScript">
<!--
var myString = new String(prompt("Please enter some various case text", ""));
document.write(myString.toUpperCase());
document.close();
-->
</script>
</html>