Question

Is there a way to list all elements that contain two or more events of the same kind?

I put a little example at JsBin:
http://jsbin.com/alafo3/edit

In this example I want a list that contains the <p> with ID=”hallo2″.

Answer 1

You can also access the events key of the attached data, e.g.

$('#hello2').data('events').click.length

returns 2.

Update:

You could for example extend jQuery this way:

$.fn.hasMultipleEventHandlersFor = function(event) {
    return this.filter(function() {
        var events =  $(this).data('events');
        return events && events[event] && events[event].length > 1;
    });
};

And use it like:

$('p').hasMultipleEventHandlersFor('click');

which will select all elements that have multiple handlers for the click event.