title: Max and min not working on input
body: <p>In angularjs app, I have input field, where i need to type number. I set max and min value like this </p>
  
  <pre><code>&lt;input type="number" min="0" max="{{totaImpressionsSum}}"/&gt;
  </code></pre>
  
  <p>On <code>$scope.totaImpressionsSum</code> i get value from controller, in this case this value is 5000. </p>
  
  <p>When I inspect in console this, max value is properly set. 
  <a href="https://i.stack.imgur.com/v6Jdg.jpg" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/v6Jdg.jpg" alt="enter image description here"></a></p>
  
  <p>I also try with ng-max and ng-min... 
  But anything of this not working, I still can type number smaller than 0 and greater than 5000. </p>
  
  <p>What I doing wrong? 
  In another place this working correct... but here not... </p>
  
  <p>Here is <a href="http://plnkr.co/edit/lLLCfo4mHwfRFNTHb2jM?p=preview" rel="nofollow noreferrer">plunker</a></p>