auto select radio button

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  • Izzy123
    New Member
    • Apr 2010
    • 7
    #1

    auto select radio button

    how do we auto selected a radio button when the user enters a numeric value in a textbox?

    my code for radio button and text box are as follows:
    Code:
    <li>Do you like your membership priviledge?
           <br />
           <input type="radio" name="think" id="yes" value="yes">
           <label for="yes">Yes</label>
           <br />
           <input type="radio" name="think" id="no" value="no">
           <label for="no">No</label>
       </li>
       <li>If you answered Yes to the above, how much more would you be willing to pay?
           $<input class="blue" type="text" name="money" />
       </li>
    can anyone pls help cause I'm really stuck here. Thanks.
    Tags: None
    • RamananKalirajan
      Contributor
      • Mar 2008
      • 608
      #2
      Hi Izzy,
      I have give a sample code which will check the radio obj when the user enters a number in input text.


      Code:
      <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<script type="text/javascript">
function isNumberKey(evt)
{
	 var charCode = (evt.which) ? evt.which : event.keyCode
	 if (charCode > 31 && (charCode < 48 || charCode > 57))
		return false;
	 return true;
}

function enableRadio(evt)
{
   var obj = isNumberKey(evt);
   if(obj==true)
   {
		document.getElementById('yes').checked=true;
		return true;
   }
   else
		return false;
}
</script>
</HEAD>

<BODY>
<input type="text" onkeypress="return enableRadio(event)" name="txtChar" />
<input type="radio" name="think" id="yes" value="yes">
</BODY>
</HTML>
      Thanks and Regards
      Ramanan Kalirajan

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