title: Angular2 events delegate
body: <p>in clear Javascript i can delegate events, to decrease number of necessary functions handling events to one, for the entire node set. For example:</p>
  
  <pre><code>&lt;div id="click-wrap"&gt;
    &lt;button&gt;Click me, nr 1&lt;/button&gt;
    &lt;button&gt;Click me, nr 2&lt;/button&gt;
    &lt;button&gt;Click me, nr 3&lt;/button&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How to get similar effect in angular2? In detail I want to remove add class</p>