Run results for: Array.includes vs Set.has v3

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:152.0) Gecko/20100101 Firefox/152.0

Browser: Firefox 152

Operating system: Windows

Device Platform: Desktop

Date tested: 2 months ago

Benchmark engine: Benchmark.js

Set.has

21.0M/s

Array.includes

13K/s

View exact numbers

Test name	Executions per second
✓ Set.has	20,982,568 Ops/sec
Array.includes	13,065 Ops/sec

Script Preparation code:

var testArr = [];
for(let i = 0; i < 100000; i++) {
  testArr.push(i);
}
var testSet = new Set(testArr);
var valuesToCheck = [0, 10, 200, 3000, 40000 ,500000];

Tests:

Array.includes
let summ = 0; valuesToCheck.forEach(v => { if (testArr.includes(v)) { summ += v; } }); return summ;
Set.has
let summ = 0; valuesToCheck.forEach(v => { if (testSet.has(v)) { summ += v; } }); return summ;