title: jQuery selector performance
body: <p>I'm having huge variations in performance depending on how I express my selectors. For example, look at these 2 selectors, which select exactly the same elements:</p>
  
  <pre><code>A) someTableRow.find("td.someColumnClass").find("span.editMode").find("input")
  B) someTableRow.find("td.someColumnClass span.editMode input")
  </code></pre>
  
  <p>I would expect to B) to be faster as there is only 1 call, but in fact I'm finding A) executes around 8 times faster. I have no idea why, anyone have any insight? Thanks</p>