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

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Run details:
Mozilla/5.0 (Android 12; Mobile; rv:109.0) Gecko/109.0 Firefox/109.0
Firefox Mobile 109
Android
Mobile
2 years ago
Test name Executions per second
querySelector 420007.2 Ops/sec
querySelectorAll 199437.3 Ops/sec
getElementsByClassName 1009335.1 Ops/sec
querySelector (ID) 399765.9 Ops/sec
getElementsByID 1019769.6 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test" id="test"></div>
Tests:

  • querySelector

     
    document.querySelector(".test")

  • querySelectorAll

     
    document.querySelectorAll(".test")

  • getElementsByClassName

     
    document.getElementsByClassName(".test")

  • querySelector (ID)

     
    document.querySelector("#test")

  • getElementsByID

     
    document.getElementById("test")