title: Detecting change in a Javascript Object
body: <p>I found this gist to detect changes on specified fiels of a object : <a href="https://gist.github.com/3138469" rel="noreferrer">https://gist.github.com/3138469</a></p>
  
  <p>But it bind an event only on one field.</p>
  
  <p>Someone know a function or a tricks to detect change on an entire Javascript Object ?</p>