On key press not working

Question

<af:inputText id="phone" onkeypress="return notext(event)" label="phone" inlineStyle="width:70px;" value="#{MembersBB.p.phone}"/>
function notext(e)
var charCode = (e.which) ? e.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
return false;
alert(charCode);
return true;
works fine in javascript, but not here.. whats the solution, not even the alert is working?

Answer 1

i Did this and it works..
function notext(e)
//alert(event.keyCode);
var charCode = (e.which) ? e.which : event.keyCode
if (charCode > 31 && (charCode < 48 || charCode > 57))
event.keyCode = 0;
return false;
// alert(charCode);
return true;
however, In javae script..you can do without event.keyCode = 0;