Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; rv:67.0) Gecko/20100101 Firefox/67.0

Browser: Firefox 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 4 years ago

Test name	Executions per second
querySelector	1715228.0 Ops/sec
getElementsByClassName	3013513.0 Ops/sec

HTML Preparation code:

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

Tests: