numeric textbox during writing in it

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hi all,
i have a text box which i want to accept numbers only and another one which accepts letters only.
i have searched a lot and writing code , but all of them after leaving text box.
i want a solution during writing in text box.

Any Help , please

Thanks

Posted 26-Feb-12 20:28pm

moon2011

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Kiirrii 27-Feb-12 2:35am

do u mean textbox which takes only no's den use ajax filtered textbox and provide no's only in properties

4 solutions

Solution 4

Thank You alot , it is working noooooooooooooooow

Posted 26-Feb-12 21:25pm

moon2011

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BillW33 24-Jul-12 16:45pm

You should not post a comment to a solution as a "Solution". Instead add a comment to a previous solution by pressing the "Have a Question or Comment?" button.

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Sarvesh Kumar Gupta · Accepted Answer · 2012-02-26T20:49:00

Hi, use below code:

ASP.NET

<asp:textbox id="txtBox" runat="server" onkeypress="return isNumeric(event);" xmlns:asp="#unknown"></asp:textbox>

JavaScript

function isNumeric(evt) {
        var charCode = (evt.which) ? evt.which : event.keyCode
        if ((charCode < 48 || charCode > 57))
            return false;
 else if ((charCode == 8 || charCode == 46 || charCode == 0 ))
return true
else
        return true;
    }

It will accept decimal values also.

For only alphabets:

JavaScript

function isAlphabet(evt) {
        var charCode = (evt.which) ? evt.which : event.keyCode
        if ((charCode < 123 && charCode > 96))
{
            return true;
}
else if ((charCode < 91 && charCode > 64))
{
return true
}
else if(charCode == 0 || charCode == 8)
{
return true
}
else
{
        return false;
}
    }

CRDave1988 · Accepted Answer · 2012-02-26T20:36:00

Try This:

JavaScript Code:

JavaScript

function isNumberKey(evt) {
        var charCode = (evt.which) ? evt.which : event.keyCode
        if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

        return true;
    }

Design Code:

ASP.NET

<asp:textbox id="txtNoOfPer" runat="server" onkeypress="return isNumberKey(event);" xmlns:asp="#unknown"></asp:textbox>

pawankumar31 · Accepted Answer · 2012-02-26T20:51:00

use this code -------------
this code allowing to user only numeric values.......

HTML

<html>
   <head>
   <script language="Javascript">
     
      function isNumberKey(evt)
      {
        var charCode = (evt.which) ? evt.which :   event.keyCode
         if (charCode > 31 && (charCode < 48 || charCode > 57))
            return false;

         return true;
      }
      
   </script>
   </head>
   <body>
      <input id="txtChar"  önkeypress="return isNumberKey(event)" type="text" name="txtChar">
   </input></body>
</html>

numeric textbox during writing in it

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