title: How to get key from key value object in Angularjs?
body: <p>I need to get key from the key value object inside array.</p>
  
  <pre><code>$scope.rolehiddenfields = [{"aboutyou": "aboutyou", "height": "height"}];
  </code></pre>
  
  <p>But want as <code>$scope.allrolehiddenfields = ["aboutyou", "height"];</code></p>