getElementById vs. querySelector

JavaScript performance comparison

Revision 99 of this test case created

Info

Compare the speed of document.getElementById to element.querySelector

Preparation code

<p id="foo">
    <p id="bar">Bar</p>
</p>
<script>
Benchmark.prototype.setup = function() {
    var foo = document.getElementById("foo");
};
</script>

Preparation code output

Bar

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Testing in unknown unknown
Test Ops/sec
getElementById
var bar = document.getElementById("bar");
pending…
querySelector
var bar = foo.querySelector("#bar");
pending…

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