<!DOCTYPE html>
<html>
<body>
<p>Click the radio button to find out which type of form element it is.</p>
<input type="radio" onclick="myFunction()" id="myRadio">
<p id="demo"></p>
<script>
function myFunction() {
var x = document.getElementById("myRadio").type;
document.getElementById("demo").innerHTML = x;
}
</script>
</body>
</html>