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<!DOCTYPE html>
<html>
<head>
  <title>has/contians reduction</title>
  <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.js"></script>
</head>
<body>
  <div id="contingent">
    <table>
      <tbody>
        <tr>
          <td>
            <span class="name">foo</span>
          </td>
        </tr>
      </tbody>
    </table>
  </div>
</body>
</html>
​
 
$(document).ready(function() {      
  console.log("These next two selectors are identical except for the order");
  console.log('tr:has(:contains(foo).name)',$('tr:has(:contains(foo).name)').length);    console.log('tr:has(.name:contains(foo))',$('tr:has(.name:contains(foo))').length);
  console.log("WTF?");
  console.log('tr:has(span.name:contains(foo))',$('tr:has(span.name:contains(foo))').length); 
  console.log('tr:has(:contains(foo)span.name)',$('tr:has(:contains(foo)span.name)').length);
  console.log('tr:has(:contains(foo))',$('tr:has(:contains(foo))').length);
  console.log('tr:has(.name)',$('tr:has(.name)').length);  
  console.log('tr:has(span.name)',$('tr:has(span.name)').length);  
​
});
​
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