title: Dynamically adding and removing Event listeners
body: <p>I added a tap listener to a div in a custom element using </p>
  
  <pre><code>var nicediv = document.getElementById('nicediv');
  nicediv.addEventListener('tap',this.listenerfunc.bind(this),false);
  </code></pre>
  
  <p>This is successful but I am unable to remove the event listener. This didn't work.</p>
  
  <pre><code>nicediv.removeEventListener('tap',this.listenerfunc);
  </code></pre>
  
  <p>Any thoughts?</p>