Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.13; rv:62.0) Gecko/20100101 Firefox/62.0

Browser: Firefox 62

Operating system: Mac OS X 10.13

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
querySelector	2491844.0 Ops/sec
getElementsByClassName	4580317.0 Ops/sec

HTML Preparation code:

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

Tests: