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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_16_0) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/83.0.4103.61 Safari/537.36
Chrome 83
Mac OS X 10.16.0
Desktop
3 years ago
Test name Executions per second
querySelector 3944378.0 Ops/sec
querySelectorAll 1546359.0 Ops/sec
getElementsByClassName 4743874.0 Ops/sec
querySelector (ID) 2794325.0 Ops/sec
getElementsByID 3667677.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID