title: Ionic fire event on input text value changes
body: <p>In Ionic, how can you catch an event on a text input field when its value changes? </p>
  
  <p>The input field:</p>
  
  <pre><code>&lt;input type="search" placeholder="Search" ng-text-change="searchMenu()"&gt;
  </code></pre>
  
  <p>The controller:</p>
  
  <pre><code>// ...
      $scope.searchMenu = function () {
          alert('changed')
          console.log(1);
      };
  // ...
  </code></pre>
  
  <p>Nothing happens when typing into the text field.</p>