title: JavaScript fails after ajax load
body: <p>I'm using this JavaScript:</p>
  <pre><code>var text = document.querySelector('._3672');
  text.addEventListener('keydown', grow);
  </code></pre>
  <p>but it stops working after I load new content with ajax.</p>
  <p>Is it possible to put all my JavaScript content inside a variable like this:</p>
  <pre><code>var init = {
      grow: function() {
          var text = document.querySelector('._3672');
          text.addEventListener(event, handler, false);
      }
  }
  </code></pre>
  <p>I don't want use JQuery's <code>.on()</code></p>