Run results for: Array#includes() vs. Set#has() vs. Object.hasOwn()

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser: Chrome 134

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Set#has()

219.9M/s

Object.hasOwn()

116.1M/s

Array#includes()

86.4M/s

View exact numbers

Test name	Executions per second
✓ Set#has()	219,870,448 Ops/sec
Object.hasOwn()	116,058,432 Ops/sec
Array#includes()	86,357,992 Ops/sec

Script Preparation code:

var arr = Array.from({ length: 10 }, (_, i) => i + 1);
var a = [...arr];
var b = new Set(arr);
var c = Object.fromEntries(arr.map((v) => [v, true]));

Tests:

Array#includes()
return a.includes(9)
Set#has()
return b.has(9)
Object.hasOwn()
return Object.hasOwn(c, '9')