jQuery: how to get the index of a checked radio button

Question

I recently came across a StackOverflow answer that gave excellent instructions on how to get the value of a checked radio button using jQuery:

var radioVal = $(\         


        

Answer 1

Though this is old, but try this (assuming you're within the click function of the radio buttons)

$('#myFormID input:radio[name=radioFieldName]').click(function(){
  var index = $('#myFormID input:radio[name=radioFieldName]').index(this);
  alert(index);
});