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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_8_5) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/49.0.2623.112 Safari/537.36
Chrome 49
Mac OS X 10.8.5
Desktop
one year ago
Test name Executions per second
querySelector 826513.8 Ops/sec
querySelectorAll 225484.2 Ops/sec
getElementsByClassName 1484846.0 Ops/sec
querySelector (ID) 817425.6 Ops/sec
getElementsByID 1522255.0 Ops/sec
Website performance monitoring
HTML Preparation code:
Tests:

  • querySelector

  • querySelectorAll

  • getElementsByClassName

  • querySelector (ID)

  • getElementsByID