getElementById vs. querySelector

JavaScript performance comparison

Revision 234 of this test case created by

Preparation code

<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div>
<div id="fap">
<p id="foo">Foo</p>
<p id="bar">Bar</p>
<p id="baz">Baz</p>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>
</div>




      
<script>
Benchmark.prototype.setup = function() {
  var fap = document.getElementById('fap')

};
</script>

Preparation code output

<div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div> <div id="fap"> <p id="foo">Foo</p> <p id="bar">Bar</p> <p id="baz">Baz</p> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div> </div>

Test runner

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Testing in CCBot 2.0.0 / Other 0.0.0
Test Ops/sec
getElementById
var bar = document.getElementById("bar");
pending…
querySelector
var bar = fap.querySelector("#bar");
pending…

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Revisions

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Foo

Bar

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