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Run results for: QuerySelector vs QuerySelectorAll vs getElementsByClassName

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/72.0.3626.96 Safari/537.36
Chrome 72
Windows
Desktop
6 years ago
Test name Executions per second
querySelector 2170365.5 Ops/sec
querySelectorAll 814290.9 Ops/sec
getElementsByClassName 2547505.0 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test"></div>
Tests:

  • querySelector

     
    document.querySelector(".test")

  • querySelectorAll

     
    document.querySelectorAll(".test")

  • getElementsByClassName

     
    document.getElementsByClassName(".test")