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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/94.0.4606.71 Safari/537.36
Chrome 94
Windows
Desktop
2 years ago
Test name Executions per second
querySelector 4045327.0 Ops/sec
querySelectorAll 2085973.0 Ops/sec
getElementsByClassName 4989658.0 Ops/sec
querySelector (ID) 2957588.0 Ops/sec
getElementsByID 4079902.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID