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how to validate alpha numeric values in textbox using jquery?
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Hi All,
how to validate alpha numeric values in textbox using jquery?
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2 solutions

Hi,

Try like this:

XML
<script type="text/javascript">
        $(function() {
            $('input.alpha[$id=tb1]').keyup(function() {
                if (this.value.match(/[^a-zA-Z0-9 ]/g)) {
                    this.value = this.value.replace(/[^a-zA-Z0-9 ]/g, '');
                }
            });
        });
    </script>


or

XML
<script type="text/javascript">
function alphanumeric(alphane)
{
        var numaric = alphane;
        for(var j=0; j<numaric.length; j++)
                {
                  var alphaa = numaric.charAt(j);
                  var hh = alphaa.charCodeAt(0);
                  if((hh > 47 && hh<58) || (hh > 64 && hh<91) || (hh > 96 && hh<123))
                  {
                  }
                else {
                         alert("Your Alpha Numeric Test Failed");
                         return false;
                  }
                }
 alert("Your Alpha Numeric Test Passed");
 return true;
}
</script>


Refer the following link:
Click here for more details

Thanks
 
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Posted
Updated 22-Feb-13 1:58am
v2
Comments
Hari Krishna Prasad Inakoti 22-Feb-13 7:47am    
sorry @sisirp88,
It is not working
[no name] 22-Feb-13 7:57am    
I have tried its working fine for me...
Can you specify your inputs that you are using for the textbox?
Try below..
JQuery code below..
JavaScript
<script language="javascript" type="text/javascript">
function alphanumericsonly(ob) 
    {
        var invalidChars = /([^a-z0-9])/gi
        if(invalidChars.test(ob.value)) 
        {
            ob.value = ob.value.replace(invalidChars,"");
        }
    }

$('.mobile').keyup(function()
            {
                alphanumericsonly(this);

            });

Text box below..
XML
<asp:TextBox ID="TextBox1" class="mobile" runat="server"></asp:TextBox>

Above code will restricts other characters except alphanumerics on keyup event...
Hope this works fine..
 
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