title: Angularjs check if section in the form is valid
body: <p>I want to check my angular form validity with a little tweak, </p>
  
  <p>I have a form builded dynamically with directives involved, Now the form has more than one page to it, so i play with ng-hide/ng-show when i move from page to page...</p>
  
  <p>All i want to do is to check the validity of the first chunk of form inputs, for example:</p>
  
  <p>I have 3 pages, 3 questions  in every 'page', before the user can go to the next page, it should check for validation on the three inputs, and only than! he can move to the next one...</p>
  
  <p>on my form tag i have 'novalidate' so i must do all the validations myself...</p>