toUpperCase() function to change lower case text to uppercase strings in JavaScript

var str="Welcome to plus2net";
var a1 = str.toUpperCase();
document.write(a1); // WELCOME TO PLUS2NET

Full code is Here

<html>
<head>
<title></title>
</head>
<body>

<script type="text/javascript">
var str="Welcome to plus2net";
var a1 = str.toUpperCase();
document.write(a1);//WELCOME TO PLUS2NET
</script>

</body>
</html>

Demo

Enter text in Lower case

<script language=JavaScript>
<!--
function copy()
{
document.getElementById("t1").value=document.getElementById("t1").value.toUpperCase();
}
//-->
</script>
Enter text in Lower case <BR>
<input  type=text id=t1 name=text onKeyUp=copy();>

Tutorial on onKeyUp() event handling

Here is the basic syntax for toUpperCase method.

var a1 = string.toUpperCase();

JavaScript String Reference Uppercase to lower case by toLowerCase() method

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Prakash	11-03-2010
Well Useful

toUpperCase() : Converting Lower case text to Uppercase in JavaScript

Demo

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