findHandlersJS
Stop wasting your time looking for where those handlers are registered, use findHandlersJS and discover them instantly.
Usage: findEventHandlers(eventType, jQuerySelector)
Imagine you want to find all the "click" event handlers for all the buttons that are immediate children of the div with id="myDiv":
findEventHandlers("click", "div#myDiv > :button")
It will return an array with the element names, the jQuery $._data event information and the list of elements that that event handler covers (targets).
For example, if div#myDiv has a delegate handler with the selector :button and there is a button with id="save" inside the div, you would get this result: [{ element: div#myDiv, events: [{ type: "click", handler: function() {...}, namespace: "", selector: ":button", ... targets: [button#save] }] }]
If you are using the console on Chrome, you can right click the handler, click show function definition and add breakpoints to debug the handlers.
More info here