<%@ 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>
Saturday, December 17, 2011
How to validate a number between 0-24 with Java Scripts
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