title: test if event handler is bound to an element in jQuery
body: <p>Is it possible to determine whether an element has a click handler, or a change handler, or any kind of event handler bound to it using jQuery?</p>
  
  <p>Furthermore, is it possible to determine how many click handlers (or whatever kind of event handlers) it has for a given type of event, and what functions are in the event handlers?</p>