​x
 
<html>
<head>
<script type="text/javascript">
function alertId()
  {
  var txt="Id: " + document.getElementById("male").id
  txt=txt + ", type: " + document.getElementById("male").type
  txt=txt + ", value: " + document.getElementById("male").value
  alert(txt)
  }
</script>
</head>
<body>
​
<form>
Male: <input id="male" type="radio" name="Sex" value="Male" />
<br />
Female: <input id="female" type="radio" name="Sex" value="Female" />
<br /><br />
<input type="button" value="Alert details" onclick="alertId()" />
</form>
​
</body>
</html>
​