Run results for: querySelector vs querySelectorAll vs getElementsByClassName vs querySelector (ID) vs getElementsByID

Run details:

User agent: Mozilla/5.0 (Windows NT 6.1; rv:91.0) Gecko/20100101 Firefox/91.0

Browser: Firefox 91

Operating system: Windows 7

Device Platform: Desktop

Date tested: 2 years ago

HTML Preparation code:

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

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

Tests:

querySelector
document.querySelector(".test")
document.querySelector(".test")
querySelectorAll
document.querySelectorAll(".test")
document.querySelectorAll(".test")
getElementsByClassName
document.getElementsByClassName(".test")
document.getElementsByClassName(".test")
querySelector (ID)
document.querySelector("#test")
document.querySelector("#test")
getElementsByID
document.getElementById("test")
document.getElementById("test")