querySelectorAll vs getElementById

JavaScript performance comparison

Revision 48 of this test case created by

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

<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>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
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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