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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 (Linux; Android 7.1.2; MK39) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.198 Safari/537.36 OPR/61.1.3076.56625
Opera 61
Android 7.1.2
Desktop
3 years ago
Test name Executions per second
querySelector 742420.0 Ops/sec
querySelectorAll 261927.5 Ops/sec
getElementsByClassName 1081555.0 Ops/sec
querySelector (ID) 606344.6 Ops/sec
getElementsByID 1236958.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID