<%@ Page Language="C#" %>
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" runat="server">
<script language="javascript" type="text/javascript">
function checkIt(obj, evt) {
evt = (evt) ? evt : window.event
var charCode = (evt.which) ? evt.which : evt.keyCode
if ((charCode < 45 || charCode > 57) && charCode != 8 && charCode != 37 && charCode != 39) {
alert("This field accepts numbers only")
return false
}
var t = (charCode / 1) - 48;
var v = obj.value + t;
var value = v / 1;
if(value > 24){
alert("Number should be less than 24");
return false;
}
return true
}
</script>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox runat="server" ID="txtNumber" onKeyPress='javascript:return checkIt(this, event)' />
</div>
</form>
</body>
</html>
No comments:
Post a Comment