getElementsByClassName vs jQuery $ selector vs querySelectorAll (v12)

Revision 12 of this benchmark created by Yanis Benson on

Preparation HTML

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<div id="playtime">
  <ul>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
    <li><a href="#" name="name" class="classname">A</a></li>
  </ul>
</div>

Setup

var nodesDad, nodes, len, i;
    
    var sample ='AAAAAAAAAA';
    function check(nodes){
      var sum = '';
      var i = nodes.length;
      for(var l = nodes.length, i = 0; i < l; i++) sum+= nodes[i].innerText;
      if(sum != sample) throw 'error: '+sum;
    }

Test runner

Ready to run.

Testing in
TestOps/sec
class
nodes = document.getElementsByClassName('classname');
check(nodes);
ready
query class
nodes = document.querySelectorAll('.classname');
check(nodes);
ready
jquery class
nodes = $('.classname');
check(nodes);
ready
class => jquery
nodes = $(document.getElementsByClassName('classname'));
check(nodes);
ready
jquery id => find class
nodesDad = $('#playtime');
nodes = nodesDad.find('.classname');
check(nodes);
ready
id => query class
nodesDad = document.getElementById('playtime');
nodes = nodesDad.querySelectorAll('.classname');
check(nodes);
ready
id => class
nodesDad = document.getElementById('playtime');
nodes = nodesDad.getElementsByClassName('classname');
check(nodes);
ready

Revisions

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