title: How to toggle button's state in angular.js?
body: <p>What I'm trying to do is to enable submit button If all of the textboxes hold values in them. Disable the submit button otherwise. But the problem here is the number of textboxes may vary (dynamic) so I can not hardcode the models in <code>ng-disabled</code> attribute.</p>
  
  <p>This is what I've tried so far: <a href="http://jsfiddle.net/codef0rmer/6uKAT/">http://jsfiddle.net/codef0rmer/6uKAT/</a></p>
  
  <p>Is there any other approach I should follow?</p>