title: Is binding events in jQuery very expensive, or very inexpensive?
body: <p>I just wrote a $().bind('event') function and then got concerned that this kind of a call might be very expensive if jQuery has to run through each element in the DOM to bind this event.</p>
  
  <p>Or maybe, it's just about as efficient as an event could be. The jQuery docs I've read aren't making this clear. Any opinions?</p>