getElementById vs. getElementsByClassName vs. querySelector vs. jQuery (v17)

Revision 17 of this benchmark created on

Preparation HTML

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1/jquery.min.js"></script>
<p id="foo" class="my-foo">Foo</p>
<p id="bar" class="my-bar">Bar</p>
<p id="baz" class="my-baz">Baz</p>

Test runner

Ready to run.

Testing in
TestOps/sec
getElementById
var bar = document.getElementById("bar");
ready
querySelector
var bar = document.querySelector("#bar");
ready
getElementsByClassName
var bar = document.getElementsByClassName("my-bar");
ready
jQuery ID Selector
var bar = $("#bar");
ready
jQuery Class Selector
var bar = $(".my-bar");
ready

Revisions

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