Run results for: Number.isInteger() vs typeof

Is it faster to detect if a variable is an integer or is it faster to use typeof to verify the type?

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Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36
Chrome 131
Windows
Desktop
one year ago
typeof negative
119.0M/s
typeof positive
115.0M/s
Number.isInteger() positive
96.3M/s
Number.isInteger() negative
93.1M/s
View exact numbers
Test name Executions per second
✓ typeof negative 118,972,616 Ops/sec
typeof positive 114,982,920 Ops/sec
Number.isInteger() positive 96,349,592 Ops/sec
Number.isInteger() negative 93,065,072 Ops/sec
Tests: