Run results for: isNaN vs Number.isNaN vs Object.is

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/130.0.0.0 Safari/537.36 OPR/116.0.0.0 (Edition developer)

Browser: Opera 116

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Number.isNaN

76K/s

isNaN

76K/s

Object.is

39K/s

View exact numbers

Test name	Executions per second
✓ Number.isNaN	75,919 Ops/sec
isNaN	75,884 Ops/sec
Object.is	39,145 Ops/sec

Script Preparation code:

var num = Array(100).fill(0).map(v => Math.random() < 0.2 ? NaN : Math.random());

Tests:

isNaN
num.map(v => isNaN(v));
Number.isNaN
num.map(v => Number.isNaN(v))
Object.is
num.map(v => Object.is(v, NaN));