title: jQuery : which is faster in this case (.find) vs (.filter)
body: <p>I have a big table, containing lots of lines (50-200) and columns (30). So in total I have at least 1500 cells. I want to know which of the following instructions are faster and why?</p>
  
  <pre><code>//assuming we have some predefined variable
  var table = $('#myTable');
  var allCells = table.find('td');
  </code></pre>
  
  <p>If a selected cell have a class <code>selected</code></p>
  
  <pre><code>selectedCells = table.find('td.selected');
  </code></pre>
  
  <p>vs</p>
  
  <pre><code>selectedCells = allCells.filter('.selected');
  </code></pre>
  
  <p>Or is there a better, native javascript way (in term of performance and readability) to find selected cells considering you have 1500 cells to loop through?</p>