getElementById vs. querySelectorAll (v4)

Revision 4 of this benchmark created on

Description

Compare the speed of getElementById, getElementsByTagName, getElementsByClassName, querySelector, and querySelectorAll

Preparation HTML

<p id="foo">Foo</p>
<p id="bar">Bar</p>
<p id="baz">Baz</p>
<p class="oof">Oof</p>

Test runner

Ready to run.

Testing in
TestOps/sec
getElementById
var bar = document.getElementById("bar");
ready
querySelectorAll
var bar = document.querySelectorAll("#bar");
ready
querySelector
var bar = document.querySelector("#bar");
ready
querySelectorAll (spec)
var bar = document.querySelectorAll("p#bar");
ready
querySelector (spec)
var bar = document.querySelector("p#bar");
ready
getElementsByClassName
var oof = document.getElementsByClassName("oof");
ready
getElementsByTagName
var myp = document.getElementsByTagName("p");
ready

Revisions

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