Finding Dom Node Index for elements of a certain class

Question

Hi I have a series of tags with different classes. When a span is clicked I want to return the index of the class of spans. So not the index of the spans themselves.

He

Answer 1

Try,

$( "span" ).click(function() {
    var index = $('.' + $(this).attr('class')).index($(this));
    alert(index + 1);
});

DEMO

Answer 2

Try this:

var index = $(this).parent().find($(this)).index();