title: Jquery append content to div
body: <p>I load a content to <code>&lt;div id="wrapper"&gt;&lt;/div&gt;</code> via jquery.</p>
  
  <pre><code>$('#wrapper').html(data);
  </code></pre>
  
  <p>When the content inserted into wrapper, there is another div with <code>id="video1"</code>.</p>
  
  <p>How can I append something to that <code>id="video1"</code></p>