title: how to get div content by role javascript
body: <p>I'm trying to get feed content from facebook dom.</p>
  
  <pre><code>&lt;div role="feed"&gt;
  </code></pre>
  
  <p>so i did that:</p>
  
  <pre><code>querySelectorAll($("div[role='feed']"))
  </code></pre>
  
  <p>like this:
  <a href="https://stackoverflow.com/questions/24578589/jquery-get-element-by-role-tag">get div by role</a>
  but it returns undifend result.
  I tried some more similar way but still get undifend.</p>
  
  <p>It is possible to get this data?
  thanks </p>