Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; WOW64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.111 Safari/537.36 OPR/72.0.3815.186

Browser: Opera 72

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelector	2332786.0 Ops/sec
getElementsByClassName	2705598.0 Ops/sec

HTML Preparation code:

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

Tests: