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 10.15; rv:127.0) Gecko/20100101 Firefox/127.0
Firefox 127
Mac OS X 10.15
Desktop
2 years ago
getElementsByID
15.6M/s
getElementsByClassName
15.2M/s
querySelector
8.6M/s
querySelector (ID)
8.6M/s
querySelectorAll
3.9M/s
View exact numbers
Test name Executions per second
✓ getElementsByID 15,564,460 Ops/sec
getElementsByClassName 15,243,334 Ops/sec
querySelector 8,577,793 Ops/sec
querySelector (ID) 8,565,148 Ops/sec
querySelectorAll 3,896,378 Ops/sec
HTML Preparation code:
Tests: