Run results for: querySelector vs getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 11_2_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/88.0.4324.150 Safari/537.36 OPR/74.0.3911.107

Browser: Opera 74

Operating system: Mac OS X 11.2.2

Device Platform: Desktop

Date tested: 3 years ago

Test name	Executions per second
querySelector	3262546.0 Ops/sec
getElementsByClassName	3662652.0 Ops/sec

HTML Preparation code:

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

Tests:

querySelector
document.querySelector(".test")
getElementsByClassName
document.getElementsByClassName(".test")