title: jquery selector to filter out th elements
body: <p>I have:</p>
  
  <pre><code>var rows = $table.find('tbody &gt; tr').get();
  </code></pre>
  
  <p>This selects all rows.  However, not all tables have thead and tbody explicitly defined, so I need to filter <em>out</em> any rows that have .children('th')</p>