jQuery Selector Benchmark

JavaScript performance comparison

Revision 16 of this test case created

Info

You can select children on a DOM in so many ways. This test breaks down selecting children in a list with use of a context, no context, and child selectors.

Preparation code

<script src="//code.jquery.com/jquery-1.8.3.min.js">
</script>
<div id="container">
  <ul id="parent">
    <li class="child">
    </li>
    <li class="foo">
    </li>
    <li class="child">
    </li>
    <li class="bar">
    </li>
  </ul>
</div>
<script>
  Benchmark.prototype.setup = function() {
    //Save The Context
    var parentContext = document.getElementById('parent');
  };
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
Context
 
$('.child', parentContext);
 pending…
Find
 
$(parentContext).find('.child');
 pending…
Alternate Find
 
$('#parent').find('.child');
 pending…
Children
 
$(parentContext).children('.child');
 pending…
Parent / Child Selector
 
$('#parent > .child');
 pending…
Class Only
 
$('.child');
 pending…

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