getElementById vs. querySelector

JavaScript performance comparison

Revision 322 of this test case created by

Preparation code

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

Preparation code output

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

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
getElementById or querySelector
var selector = "#bar",
    func = selector.match('^#[A-z0-9-]*$') ? "getElementById" : "querySelector",
    bar = document[func]("bar");
pending…

Revisions

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Foo

Bar

Baz