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Length of a radio group being returned as undefined when there is only one radio button in the group

Posted on 2008-10-09
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Last Modified: 2008-10-10
The radio.length value returns 'undefined' when there is only one value in a radio group.  

I know it is not normal to have just one value in the radio group, but I find myself in that situation where the number of radio buttons in the group depends on the output of a query.

Anyone knows how I can work around this issue.


JAVASCRIPT FUNCTION:
 

<script type="text/javascript">

	function getRadioValue(radio) {

	    for(i=0; i<radio.length; i++) {

	        if(radio[i].checked) return radio[i].value;

	    }

	    return 0;

	}

</script>

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Question by:onaled777
  • 2
2 Comments
 
LVL 82

Accepted Solution

by:
hielo earned 250 total points
ID: 22683753
function getRadioValue(radio) {
   if("undefined"==typeof(radio.length) )
   {
     if(radio.checked)
      return radio.value;
   }
   else
   {
          for(i=0; i
0
 
LVL 82

Expert Comment

by:hielo
ID: 22684867
glad to help
0

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