Javascript:
This is a good method taught to me by my friend to disable
any character in the keyboard Within Forms in your web page/ web application.
<html>
<head>
<script language=javascript type=text/javascript>
<!--
function stopRKey(evt) {
var evt = (evt) ? evt : ((event) ? event : null);
// var node = (evt.target) ? evt.target : ((evt.srcElement) ? evt.srcElement : null);
alert(evt.keyCode);
if (evt.keyCode == 39 || evt.keyCode == 222) {return false;}
}
document.onkeypress = stopRKey;
-->
</script>
</head>
<body>test
<textarea rows="5"></textarea>
</body>
</html>
Save above code as html and try type single quote(') in test box !