class-vs-data

JavaScript performance comparison

Revision 4 of this test case created by junepark

Info

Class selector vs Data attribute selector

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/2.0.3/jquery.min.js"></script>

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

Preparation code output

Test runner

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Java applet disabled.

Testing in unknown unknown
Test Ops/sec
Class selector
$(".test")
pending…
Data selector
$("[data-test='test']")
pending…

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