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Run results for:
querySelector Class vs querySelector Attribute
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:150.0) Gecko/20100101 Firefox/150.0
Browser:
Firefox 150
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one month ago
Test name
Executions per second
querySelector by Class
5425381.0 Ops/sec
querySelector by Attribute
6264547.0 Ops/sec
querySelector by Class Attribute
4932177.5 Ops/sec
HTML Preparation code:
<div> <span class="a"></span> <span class="b"></span> <span class="c"></span> <span class="d"> <span class="e"></span> <span class="f"></span> <span class="g"></span> </span> <span class="a"></span> <span class="b"></span> <span class="c"></span> <span class="d"> <span class="e"></span> <span class="f"> <div class="test" someattr="test"></div> </span> <span class="g"></span> </span> </div>
Tests:
querySelector by Class
document.querySelector(".test");
querySelector by Attribute
document.querySelector('[someattr="test"]');
querySelector by Class Attribute
document.querySelector('[class="test"]');