some jquery selectors performance tests

JavaScript performance comparison

Revision 13 of this test case created

Preparation code

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

<div id="a" class="a">
<div>
    <div>
        </div>
            <div>
                <p class="ddd"></p>
            </div>
        </div>
    </div>
</div>
<div>
    <div>
        <p class="ddd"></p>
    </div>
</div>
<div>
    <div>
        </div>
            <p class="ddd"></p>
        </div>
    </div>
</div>
</div>

<script>
  $a_div = $('#a');
</script>

Preparation code output

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Testing in unknown unknown
Test Ops/sec
$('#a .ddd')
$('#a .ddd')
pending…
$('.ddd', $a_div)
$('.ddd', $a_div)
pending…
$a_div.find('.ddd')
$a_div.find('.ddd')
pending…
$('.a .ddd')
$('.a .ddd')
pending…

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