Run results for: array.includes vs set.has vs object property

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36

Browser: Chrome 127

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

set has

18.4M/s

object property

18.2M/s

array includes

15.8M/s

View exact numbers

Test name	Executions per second
✓ set has	18,365,182 Ops/sec
object property	18,242,976 Ops/sec
array includes	15,838,078 Ops/sec

Script Preparation code:

var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = new Set(a);
var c = {1: true, 2: true, 3: true, 4: true, 5: true, 6: true, 7: true, 8: true, 9: true}

Tests:

array includes
return a.includes(9)
set has
return b.has(9)
object property
return c[9]