[Solved] .index() only for one instance of class [closed]

Question

It is working like this:

$('.three').click(function(){
    $(this).parent().parent().find('.threeB').eq($(this).index())
        .css('background','green');
});

Check here: jsFiddle

Accepted Answer

It is working like this:

$('.three').click(function(){
    $(this).parent().parent().find('.threeB').eq($(this).index())
        .css('background','green');
});

Check here: jsFiddle