title: How do I check form validity with angularjs?
body: <p>I'm very new to angularjs. Say my app has a form. Using the inspector, I noticed that if angularjs thinks that the form is invalid, it adds an ng-invalid class to the form. Lovely.</p>
  
  <p>So it seems that in order to check if the form is valid I need to pollute my code with Jquery selector?! What is the angularjs way to indicate form validity without using a form controller?</p>