Run results for: document.querySelector vs document.getElementsByClassName

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; M2101K9G) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Mobile Safari/537.36

Browser: Chrome Mobile 107

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
querySelector	1440425.0 Ops/sec
getElementsByClassName	1647875.0 Ops/sec

HTML Preparation code:

<div class="test1">
  <p>Hello</p>
</div>
<div class="test2">
  <p>Hello</p>
</div>
<div class="test3">
  <p>Hello</p>
</div>
<div class="test4">
  <p>Hello</p>
</div>
<div class="test5">
  <p>Hello</p>
</div>
<div class="test6">
  <p>Hello</p>
</div>
<div class="test7">
  <p>Hello</p>
</div>

Tests:

querySelector
document.querySelector(".test3")
getElementsByClassName
document.getElementsByClassName("test3")