the time alert shows error

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I created a function to show time...But it shows error by alert message...

my code here:::::

C#

function numonly(evt) {
           var nbr;
           var nbr = (window.event) ? event.keyCode : evt.which;
           if (nbr >=01 && nbr <=23 ) {
               return true;
           }
           else {
               alert("Mention the time correctly");
               return false;
           }
       }

I want to show time from 1 to 23....so i gave nbr>=1 ....But if i give 1 it shows error....what should i do....

thanks in advance

Posted 15-Feb-12 21:08pm

vivekx2

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Sudip Saha · Answer 1 · 2012-02-15T21:34:00

<html>>
   <HEAD>
   <SCRIPT language=Javascript>
      <!--
      function isNumberKey(evt,val)
      {
         var charCode = (evt.which) ? evt.which : event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            {
  alert("Mention the time correctly");

      return false;
       }
      else
      {
         if(val>23)
      {
        return false;
          alert("Mention the time correctly");

        }
  else
      {
         return true;
       }
   }
      }
      //-->
   </SCRIPT>
   </HEAD>
   <BODY>
      <INPUT id="txtChar" onkeypress="return isNumberKey(event,this.value)" type="text" name="txtChar">
   </BODY>
</HTML>