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/65.0.3325.109 Mobile Safari/537.36 EdgA/41.0.0.1921

Browser: Safari537.36 edga/41.0.0

Operating system: Android 8.1.0

Device Platform: Mobile

Date tested: 5 years ago

Test name	Executions per second
querySelectorAll	811172.7 Ops/sec
getElementsByClassName	963817.6 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