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querySelectorAll-vs-getElementsByTagName-wildcard

Benchmark created by Simon Lindholm on November 3, 2013

Test runner

Ready to run.

Test Ops/sec

querySelectorAll

Testing in
Test	Ops/sec
querySelectorAll	`var a = document.querySelectorAll("*"); for (var i = 0, len = a.length; i < len; i++) window.a = a[i];`	ready
getElementsByTagName	`var a = document.getElementsByTagName("*"); for (var i = 0, len = a.length; i < len; i++) window.a = a[i];`	ready

var a = document.querySelectorAll("*");
for (var i = 0, len = a.length; i < len; i++) window.a = a[i];

ready

getElementsByTagName

var a = document.getElementsByTagName("*");
for (var i = 0, len = a.length; i < len; i++) window.a = a[i];

ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.

Revision 1: published by Simon Lindholm on November 3, 2013