<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
<script type="text/javascript">
var fn = function () {
var radios = document.getElementsByName('ipt');
for (var i = 0; i < radios.length;i++ ) {
var item = radios[i];
if (item.checked) {
alert(item.getAttribute('value'));
}
}
}
</script>
</head>
<body>
<div id="container">
<input type="radio" name="ipt" value="1" />
<input type="radio" name="ipt" value="2" />
<input type="radio" name="ipt" value="3" />
<input type="radio" name="ipt" value="4" />
</div>
<input type="button" value="submit" onclick="fn()" />
</body>
</html>
