Run results for: typeof number vs. Number.isNan vs. isNan vs self comparison. Versus let

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36
Chrome 120
Windows
Desktop
2 years ago
typeof
15.8M/s
Self comparison
8.5M/s
isNaN
6.5M/s
Number.isNan
6.4M/s
View exact numbers
Test name Executions per second
✓ typeof 15,785,600 Ops/sec
Self comparison 8,503,222 Ops/sec
isNaN 6,455,585 Ops/sec
Number.isNan 6,374,538 Ops/sec
Script Preparation code:
Tests: