getElementById vs. querySelector

JavaScript performance comparison

Revision 115 of this test case created by

Preparation code

<p class="foo">Foo</p>
    

Preparation code output

<p class="foo">Foo</p>

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
querySelector
var foo = document.querySelector("foo");
pending…
getElementsByClassName
var foo = document.getElementsByClassName("foo")[0];
pending…

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Foo