getElementById vs. querySelector

JavaScript performance comparison

Revision 269 of this test case created by Philippe Roy

Preparation code

<script src="//ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<p class="foo">Foo</p>
<p class="bar">Bar</p>
<p class="baz">Baz</p>
    

Preparation code output

<p class="foo">Foo</p> <p class="bar">Bar</p> <p class="baz">Baz</p>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
jQuery
var bar = $("bar");
pending…
querySelectorAll
var bar = document.querySelectorAll(".bar");
pending…
getElementsByClassName
var bar = document.getElementsByClassName("bar");
pending…

Revisions

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Foo

Bar

Baz