getElementById vs. querySelector (v70)

Revision 70 of this benchmark created on

Description

Compare the speed of the multitude of ways to select a node in JavaScript.

Preparation HTML

<div id="find-me" class="find-me">Find me!</div>

Test runner

Ready to run.

Testing in
TestOps/sec
getElementById
var found = document.getElementById("find-me");
ready
getElementsByClassName
var found = document.getElementsByClassName(".find-me")[0];
ready
querySelector(id)
var found = document.querySelector("#find-me");
ready
querySelector(class)
var found = document.querySelector(".find-me");
ready
querySelector(tag#id)
var found = document.querySelector("div#find-me");
ready
querySelector(tag.class)
var found = document.querySelector("div.find-me");
ready
getElementsByTagName
var found = document.getElementsByTagName("div")[0];
ready

Revisions

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