title: Dart Html: add Event Handlers to objects which yet not exists
body: <p>In jQuery i can add Event Handlers to Elements which yet not exist but are later added via something like this:</p>
  
  <pre><code>$(window).on('click', '.record-todo .icon-remove', function() {
      $(this).remove();
  });
  </code></pre>
  
  <p>I didn't found anything like that in the Html Library of Dart</p>