querySelector vs querySelectorAll[0]

JavaScript performance comparison

Revision 53 of this test case created by shel

Info

Compare the speed of querySelector to querySelectorAll[0]

Preparation code

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

Preparation code output

Foo

Bar

Baz

Test runner

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Testing in unknown unknown
Test Ops/sec
querySelector
var bar = document.querySelector("#bar");
pending…
querySelectorAll[0]
var bar = document.querySelectorAll("#bar")[0];
pending…

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Revisions

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