Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (X11; CrOS x86_64 13505.63.0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.88 Safari/537.36

Browser: Chrome 87

Operating system: Chrome OS 13505.63.0

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelector	2438831.0 Ops/sec
getElementsByClassName	2916715.0 Ops/sec

HTML Preparation code:

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

Tests: