Run results for: Set.has vs Array.includes for small number of items (fixed)

Run details:

User agent: Mozilla/5.0 (Android 11; Mobile; rv:136.0) Gecko/136.0 Firefox/136.0

Browser: Firefox Mobile 136

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

set_1

535.9M/s

set_2

535.0M/s

set_8

533.2M/s

set_4

530.5M/s

array_1

20.4M/s

array_2

20.0M/s

array_4

19.3M/s

array_8

18.6M/s

View exact numbers

Test name	Executions per second
✓ set_1	535,945,088 Ops/sec
set_2	535,038,176 Ops/sec
set_8	533,195,424 Ops/sec
set_4	530,497,504 Ops/sec
array_1	20,402,522 Ops/sec
array_2	20,027,638 Ops/sec
array_4	19,272,594 Ops/sec
array_8	18,608,556 Ops/sec

Script Preparation code:

const item_1 = Math.floor(1 / 2);
const array_1 = new Array(1).fill(0).map((_, i) => i);
const set_1 = new Set(array_1);

const item_2 = Math.floor(2 / 2);
const array_2 = new Array(2).fill(0).map((_, i) => i);
const set_2 = new Set(array_2);

const item_4 = Math.floor(4 / 2);
const array_4 = new Array(4).fill(0).map((_, i) => i);
const set_4 = new Set(array_4);

const item_8 = Math.floor(8 / 2);
const array_8 = new Array(8).fill(0).map((_, i) => i);
const set_8 = new Set(array_8);

Tests:

array_1
array_1.includes(item_1)
set_1
set_1.has(item_1)
array_2
array_2.includes(item_2)
set_2
set_2.has(item_2)
array_4
array_4.includes(item_4)
set_4
set_4.has(item_4)
array_8
array_8.includes(item_8)
set_8
set_8.has(item_8)