jquery selector speed id vs class index (v98)

Revision 98 of this benchmark created on

Preparation HTML

<div id="container">
  <ul>
    <li id="byID">1</li>
    <li class="unique_class">2</li>
    <li class="multi_class">3</li>
    <li class="multi_class">4</li>
  </ul>
</div><script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Test runner

Ready to run.

Testing in
TestOps/sec
$('#target')
$('#byID').html('1');
ready
$('.target') only 1 class on page
$('.unique_class').html('2');
ready
$('.target').first()
$('.multi_class').first().html('3');
ready
$('.target:eq(1)')
$('.multi_class:eq(1)').html('4');
ready

Revisions

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