title: Backbone View event or bubbling
body: <p>I have a parent view which contains let say 400 child views. If I register 2 events per view that will be 800 events which DOM will be lsitening for.</p>
  
  <p>My question is should I register events in child view or should I use bubble events to capture the event at parent level.</p>
  
  <p>Which is optimize and efficent.</p>
  
  <p>Thanks in advance</p>