title: is there a way to get the DOM object given a $$hashKey?
body: <p>I have a <code>&lt;table&gt;</code> where each row has a couple of <code>input type="text"</code>. I want to validate if an input is empty and if so, then add a CSS class to this input field which will display an error. All I got in the <code>$scope</code> is the <code>$$hashKey</code>, I know this is an unique value to identify an element of a <code>ng-repeat</code> list.</p>
  
  <p>How could I get the DOM object given this <code>$$hashKey</code>?. I was digging using the Developer Tools but I didn't find it.</p>