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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 11_1_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/87.0.4280.101 Safari/537.36
Chrome 87
Mac OS X 11.1.0
Desktop
3 years ago
Test name Executions per second
querySelector 3803390.0 Ops/sec
querySelectorAll 1394717.0 Ops/sec
getElementsByClassName 4792085.0 Ops/sec
querySelector (ID) 2743896.0 Ops/sec
getElementsByID 3652255.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID