title: JQuery ON selector not working
body: <p>I have created custom JS function which uses keyboard to work with table rows. In fact, I use up/down keys to select row (preview details) and Enter to simulate double click (edit details).</p>
  
  <p>It is working very well, you can view working example at <a href="http://jsfiddle.net/n6hn2/19/" rel="nofollow">http://jsfiddle.net/n6hn2/19/</a>
  Just Focus on table and try Up/Down/Enter and see Console..</p>
  
  <ol>
  <li><p>Why this doesn't work with selector, like this</p>
  
  <pre><code>$('#' + tableid).on('keyup', 'tbody', function(e) {...
  </code></pre>
  
  <p>also tried 'tbody tr' as selector, and <code>$('#' + tableid + ' tbody tr')</code> but nothing.</p></li>
  <li><p>When I enter something in input box (<code>search_article</code>), and HIT Enter, my function DblClick is triggered. Which is, in fact OK without selector, but I don't want that.</p></li>
  </ol>