Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; rv:77.0) Gecko/20100101 Firefox/77.0

Browser: Firefox 77

Operating system: Windows

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelector	975382.9 Ops/sec
getElementsByClassName	1483833.0 Ops/sec

HTML Preparation code:

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

Tests: