querySelectorAll vs getElementById

JavaScript performance comparison

Revision 48 of this test case created

Preparation code

<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<div></idv>
<p>bar</p>
<p>bar</p>
<p>bar</p>
<p>bar</p>
 

Preparation code output

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

bar

Test runner

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Testing in unknown unknown
Test Ops/sec
querySelectorAll
var result = document.querySelectorAll('p');
pending…
getElementsByTag
var result = document.getElementsByTagName('p');
pending…

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Revisions

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