title: AngularJS backspace keypress
body: <p>I need to capture user's backspaces inside an input.</p>
  
  <p>So I've done this:</p>
  
  <pre><code>&lt;input type="text" ui-keypress="{8:'removeTagOnBackspace()'}" ng-model="searchStudent" /&gt;
  </code></pre>
  
  <p>And then, inside my controller I've done this, just to check if it's working:</p>
  
  <pre><code>$scope.removeTagOnBackspace = function() {
      console.log('here');
  };
  </code></pre>
  
  <p>But is not printing anything.
  What is wrong with this? Is angular able to capture backspaces?</p>