Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36

Browser: Chrome 69

Operating system: Mac OS X 10.13.5

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
querySelector	2100245.0 Ops/sec
getElementsByClassName	2631379.0 Ops/sec

HTML Preparation code:

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

Tests: