Let’s say an event handler is attached to your element. For example,
$('#foo').click(function() { console.log('clicked!') });
Then you can debug it like this:
For jQuery 1.3.x
var cEvent = $('#foo').data("events").click; jQuery.each(cEvent, function(key, value) { console.log(value) })
For jQuery 1.4.x
var cEvent = $('#foo').data("events").click; jQuery.each(cEvent, function(key, handlerObj) { console.log(handlerObj.handler) })
For jQuery 1.8.x+
var cEvents = $._data($('#foo')[0], "events").click; jQuery.each(cEvents, function(key, handlerObj) { console.log(handlerObj.handler) })