title: Check all check boxes in AngularJS
body: <p>I'm new in AngularJS. Please have look to this:</p>
  
  <p><a href="https://i.stack.imgur.com/B0K2J.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/B0K2J.png" alt="enter image description here"></a></p>
  
  <p>Now when user clicks on "All" link, all the <strong>11 check boxes</strong> should be checked and when user clicks on "None" link, all the <strong>11 check boxes</strong> should be unchecked.</p>
  
  <p>Plus when user check the <strong>All others</strong> check box, all the bottom <strong>9 check boxes</strong> should be checked and when user uncheck the <strong>All others</strong> check box, all the bottom <strong>9 check boxes</strong> should be unchecked.</p>
  
  <p>I'm able to achieve one of the task at a time, but not simultaneously.
  So, can anybody please help me to achieve both the tasks simultaneously?</p>
  
  <p>Any help would be appreciated. </p>