title: What does a query selector return in zombie.js?
body: <p>I am learning Zombie.js with node.js using <code>sys.debug()</code> statements to track my progress. What is returned by calls like this <code>t = browser.body.querySelector(".navigation");</code> ? It is hard to tell what is going on without browser developer tools or something like php's <code>var_dump</code>. The <a href="http://zombie.labnotes.org/API" rel="nofollow">API</a> doesn't really explain it. </p>
  
  <p>How do I unpack this? </p>
  
  <pre><code>t = browser.body.querySelector(".navigation");
  sys.debug(t); //returns "DEBUG: [ UL.navigation]" I don't know what this means.
  </code></pre>