Run results for: querySelector vs querySelectorAll simple 2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:103.0) Gecko/20100101 Firefox/103.0

Browser: Firefox 103

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
querySelector	3114622.0 Ops/sec
querySelectorAll	1630916.1 Ops/sec
ByClassName	9847813.0 Ops/sec

HTML Preparation code:

<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test321312"></div>
<div class="test"></div>
<div class="test"></div>
<div class="test"></div>
<div class="test"></div>
<div class="test3213123"></div>
<div class="test pipoca"></div>
<div class="test"></div>
<div class="test dsadsadas"></div>
<div class="test sadasds"></div>
<div class="test lalalala"></div>
<div class="test"></div>
<div class="test sadasdasd"></div>

Tests:

querySelector
document.querySelector(".test.pipoca")
querySelectorAll
document.querySelectorAll(".test.pipoca")
ByClassName
document.getElementsByClassName("test pipoca")

Run results for: querySelector vs querySelectorAll simple 2

querySelector

querySelectorAll

ByClassName