Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36

Browser: Chrome 75

Operating system: Mac OS X 10.14.0

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelector	2988474.0 Ops/sec
getElementsByClassName	3641754.0 Ops/sec

HTML Preparation code:

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

Tests: