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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/89.0.4389.90 Safari/537.36 Edg/89.0.774.54
Chrome 89
Mac OS X 10.15.7
Desktop
3 years ago
Test name Executions per second
querySelector 1785159.0 Ops/sec
querySelectorAll 786798.1 Ops/sec
getElementsByClassName 1658351.0 Ops/sec
querySelector (ID) 1269060.0 Ops/sec
getElementsByID 1949251.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID