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

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 16_5_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.5.1 Mobile/15E148 Safari/604.1

Browser: Mobile Safari 16

Operating system: iOS 16.5.1

Device Platform: Mobile

Date tested: 10 months ago

Test name	Executions per second
array includes	19140880.0 Ops/sec
set has	25392890.0 Ops/sec
object property	28449660.0 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]

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

array includes

set has

object property