querySelectorAll vs getElementById

JavaScript performance comparison

Revision 44 of this test case created by shwups

Preparation code

<span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span>
<p id="foo">bar</p>
    

Preparation code output

<span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span><span>gix</span> <p id="foo">bar</p>

Test runner

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Java applet disabled.

Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
querySelectorAll
var result = document.querySelectorAll('#foo')[0];
pending…
querySelector
var result = document.querySelector('#foo');
pending…
getElementById
var result = document.getElementById('foo');
pending…

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Revisions

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0 Comments

gixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgixgix

bar