Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:64.0) Gecko/20100101 Firefox/64.0

Browser: Firefox 64

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
querySelector	2620587.0 Ops/sec
getElementsByClassName	4345516.0 Ops/sec

HTML Preparation code:

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

Tests: