Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Ubuntu Chromium/66.0.3359.181 Chrome/66.0.3359.181 Safari/537.36

Browser: Chromium 66

Operating system: Ubuntu

Device Platform: Desktop

Date tested: 6 years ago

Test name	Executions per second
querySelector	2453028.5 Ops/sec
getElementsByClassName	2849155.8 Ops/sec

HTML Preparation code:

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

Tests: