title: How to make angularJS $watch to detect changes in style?
body: <p>I am having a rich text box with all the style controls. </p>
  
  <p>When I enter a new text in it - it saves.</p>
  
  <p>When I make any changes in the content (text) along with some styles like color highlighting and bold text - it saves the changed text and styles.</p>
  
  <p>But, when I just make style changes without any content change - it won't save those style changes.</p>
  
  <p>I am using $watch to compare new value and old value.</p>
  
  <p>How to make it work even for style changes?</p>