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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_6) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.0.1 Safari/605.1.15
Safari 14
Mac OS X 10.15.6
Desktop
3 years ago
Test name Executions per second
querySelector 4135323.0 Ops/sec
querySelectorAll 2374411.0 Ops/sec
getElementsByClassName 5099663.0 Ops/sec
querySelector (ID) 4022556.0 Ops/sec
getElementsByID 5440421.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID