Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/67.0.3396.102 Safari/537.36 Vivaldi/1.97.1230.3

Browser: Chrome 67

Operating system: Windows 7

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
querySelector	1111977.0 Ops/sec
getElementsByClassName	1324546.0 Ops/sec

HTML Preparation code:

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

Tests: