title: ng-show if input checked an element
body: <p>I wanna show an icon when an item checked in input list.</p>
  
  <pre><code>&lt;span ng-show="ctrl.filter[year]" class="fa fa-close"&gt;&lt;/span&gt;
  </code></pre>
  
  <p>And my input:</p>
  
  <pre><code>&lt;input type="checkbox" ng-model="ctrl.filter[year]" id='year{{$index}}' class='chk-btn styled-checkbox' /&gt;
  </code></pre>
  
  <p>When I checked the page, its not working, I cannot see close button if I selected an item. 
  How can I fix it?</p>