MeasureThat.net

Run results for: QuerySelector vs QuerySelectorAll vs getElementsByClassName

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Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/78.0.3904.108 Safari/537.36
Chrome 78
Mac OS X 10.13.6
Desktop
5 years ago
Test name Executions per second
querySelector 3575971.0 Ops/sec
querySelectorAll 1347252.8 Ops/sec
getElementsByClassName 5042755.5 Ops/sec
HTML Preparation code:
AخA
 
1
<div class="test"></div>
Tests:

  • querySelector

     
    document.querySelector(".test")

  • querySelectorAll

     
    document.querySelectorAll(".test")

  • getElementsByClassName

     
    document.getElementsByClassName(".test")