title: Detect multiple keys on single keypress event in jQuery
body: <p>Is it at all possible to combine a mixture of keypress' to fire a single event?</p>
  
  <pre><code>$(document).keyup(function(e){
      if (e.keyCode == 68 &amp;&amp; e.keyCode == 69 &amp;&amp; e.keyCode == 86) {
          alert('oh hai');
      }
  });
  </code></pre>
  
  <p>I've tried it in Chrome but the event doesn't fire.</p>
  
  <p>Call me crazy but I am writing a Chrome extension and want to push <kbd>D</kbd>+<kbd>E</kbd>+<kbd>V</kbd> keys together to force it into a hidden developer mode.</p>