Hi nalinid93,
Refer below sample example.
Enter value:
<input type="text" id="text1" onkeypress="return RestrictCommaSemicolon(event);"
ondrop="return false;" onpaste="return false;" />
<script type="text/javascript">
function RestrictCommaSemicolon(e) {
var theEvent = e || window.event;
var key = theEvent.keyCode || theEvent.which;
key = String.fromCharCode(key);
var regex = /[^,;]+$/;
if (!regex.test(key)) {
theEvent.returnValue = false;
if (theEvent.preventDefault) {
theEvent.preventDefault();
}
}
}
</script>
Demo