title: How to get the parts of a url using document.referrer?
body: <p>I need to use <code>document.referrer</code> to get the previous URL I also need to be able to get the parts of the URL like:</p>
  
  <pre><code>window.location.protocol
  window.location.host
  window.location.pathname
  </code></pre>
  
  <p>but I can't figure out how to do it with <code>document.referrer</code>.  Anyone got any ideas?</p>