Question

i have problem to valid digit in textbox in IE 9 and firefox 4 & 5,
is any one know ?
i try all previous question’s answer but still face problem,
i just want use to enter only digit in textbox,
i am use asp.net too for code language.

Answer 1

As far as I’ve understood you want to allow only numeric characters in the text field and you will return other characters if they are not numeric. So, you may go through this

step1. create a javascript function

<script language="text/javascript">
function onlyNumbers(evt)
{
var e = window.event || evt; // for trans-browser compatibility
var charCode = e.which || e.keyCode;

if (charCode > 31 && (charCode < 48 || charCode > 57))
    return false;

return true;

}
</script>

step2. onkeypress call the function like this

If you call any javascript method on any event the first parameter always passed is event. For IE you need to catch the event by window.event.

For more clear ideas you can visit:- https://developer.mozilla.org/En/DOM/Event