Run results for: querySelector vs getElementsByClassName v3

Run details:

User agent: Mozilla/5.0 (Linux; Android 8.1.0; Pixel Build/OPM4.171019.016.B1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/66.0.3359.158 Mobile Safari/537.36

Browser: Safari537.36

Operating system: Android 8.1.0

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
querySelectorAll	882784.9 Ops/sec
getElementsByClassName	1189421.0 Ops/sec

HTML Preparation code:

<div class="test"></div>

Tests:

querySelectorAll
document.querySelector(".test");
getElementsByClassName
document.getElementsByClassName(".test");

Run results for: querySelector vs getElementsByClassName v3

querySelectorAll

getElementsByClassName