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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 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/101.0.4951.54 Safari/537.36
Chrome 101
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
querySelector 4574353.5 Ops/sec
querySelectorAll 2138788.5 Ops/sec
getElementsByClassName 6613664.0 Ops/sec
querySelector (ID) 3795145.2 Ops/sec
getElementsByID 4984197.5 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")