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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 (iPhone; CPU iPhone OS 14_6 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/14.1.1 Mobile/15E148 Safari/604.1
Mobile Safari 14
iOS 14.6
Mobile
2 years ago
Test name Executions per second
querySelector 5536093.0 Ops/sec
querySelectorAll 3567885.0 Ops/sec
getElementsByClassName 7180924.0 Ops/sec
querySelector (ID) 4828818.0 Ops/sec
getElementsByID 6857141.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID