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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 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/91.0.4472.114 Safari/537.36
Chrome 91
Windows
Desktop
2 years ago
Test name Executions per second
querySelector 1703584.0 Ops/sec
querySelectorAll 426247.2 Ops/sec
getElementsByClassName 2809258.0 Ops/sec
querySelector (ID) 1868363.0 Ops/sec
getElementsByID 1966028.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID