title: How to use onClick with angularJs?
body: <p>I have written a condition </p>
  
  <pre><code>onclick="window.open({{video_call_url}}, '_system', 'location=yes'); return false;"
  </code></pre>
  
  <p>here <code>video_call_url</code> is definded in myController as <code>$scope.video_call_url = 'http://www.google.com/';</code></p>
  
  <p>but when i click the button i am getting an error <code>video_call_url is not defined.</code></p>