Run results for: typeof x === 'number' vs isNaN(x)

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/107.0.0.0 Safari/537.36

Browser: Chrome 107

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

typeof

202.9M/s

isNaN

70.6M/s

View exact numbers

Test name	Executions per second
✓ typeof	202,946,288 Ops/sec
isNaN	70,634,696 Ops/sec

Tests: