jQuery Descendant Selectors vs Find

JavaScript performance comparison

Revision 22 of this test case created by Aki

Info

Which is faster, $('selector1 selector2') or $('selector1').find('selector2')

Preparation code

<div>
  <ul id="list">
    <li class="test1"></li>

    <li class="test2"></li>

    <li class="test3"></li>

    <li class="test4"></li>

    <li class="test5"></li>

    <li id="test"></li>

  </ul>
</div>

<div class="test"></div>

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
selectors
var $test1 = $('#test1 .test1'),
    $test2 = $('#test1 .test2'),
    $test3 = $('#test1 .test3'),
    $test4 = $('#test1 .test4'),
    $test5 = $('#test1 .test5'),
    $test = $('#test1');
pending…
find
var $list = $('#list'),
    $test1 = $list.find('.test1'),
    $test2 = $list.find('.test2'),
    $test3 = $list.find('.test3'),
    $test4 = $list.find('.test4'),
    $test5 = $list.find('.test5'),
    $test = $list.find('#test1');
pending…

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