Mega Code Archive
Checking a Radio Button Group
<![CDATA[
< html>
<head>
<title>Checking a Radio Button Group</title>
<script language="javascript" type="text/javascript">
<!--//
function evalGroup()
{
var group = document.radioForm.myRadio;
for (var i=0; i<group.length; i++) {
if (group[i].checked)
break;
}
if (i==group.length)
return alert("No radio button is checked");
alert("Radio Button " + (i+1) + " is checked.");
}
//-->
</script>
</head>
<body>
<h1>Checking a Radio Button Group</h1>
<form name="radioForm">
Radio Button 1: <input type="radio" name="myRadio" /><br />
Radio Button 2: <input type="radio" name="myRadio" /><br />
Radio Button 3: <input type="radio" name="myRadio" /><br />
Radio Button 4: <input type="radio" name="myRadio" /><br /><br />
<input type="button" value="Eval Group" onclick="evalGroup()" />
</form>
</body>
</html>
]]>