Run results for: set.has vs. array.includes vs array.find vs map.has

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/118.0.5993.821 YaBrowser/23.11.2.821 Yowser/2.5 Safari/537.36

Browser: Yandex Browser 23

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Array.includes

27.9M/s

Set.has

27.6M/s

Array.find

25.2M/s

Map.has

24.5M/s

View exact numbers

Test name	Executions per second
✓ Array.includes	27,878,984 Ops/sec
Set.has	27,618,222 Ops/sec
Array.find	25,212,766 Ops/sec
Map.has	24,502,754 Ops/sec

Script Preparation code:

var a = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
var b = new Set(a)
var c = new Map();
a.forEach(x => c.set(x, x)) // just for test.

Tests:

Array.includes
return a.includes(9)
Set.has
return b.has(9)
Array.find
return a.find(x => x === 9)
Map.has
return c.has(9)