querySelector vs querySelectorAll vs getElementById vs getElementsByClassName vs getElementsByTagName

JavaScript performance comparison

Revision 19 of this test case created by

Preparation code

<p id="foo" class="foo">
  <span class="bar"><span>,,,</span></span>
</p>
    

Preparation code output

<p id="foo" class="foo"> <span class="bar"><span>,,,</span></span> </p>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
querySelector Class
document.getElementsByClassName("bar");
pending…
querySelectorAll Class
document.querySelectorAll(".bar");
pending…
querySelector Id
pending…
querySelectorAll Id
pending…
getelementid
pending…

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Revisions

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0 Comments

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