Run results for: Set.has v.s Array.includes v2

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/140.0.0.0 Safari/537.36 Edg/140.0.0.0

Browser: Chrome 140

Operating system: Windows

Device Platform: Desktop

Date tested: 6 months ago

Test name	Executions per second
set	1162.9 Ops/sec
array	104.5 Ops/sec

Script Preparation code:

function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
}

function createRandomIntArray(maxLength) {
    const randomArray = [];

    for (let i = 0; i < maxLength; i++) {
        const randomInt = i;
        randomArray.push(i);
    }
    return randomArray;
}

function createTargetArray(maxLength, maxValue) {
    const randomArray = [];

    for (let i = 0; i < maxLength-1; i++) {
        const randomInt = i;
        randomArray.push(10001+i);
    }
    randomArray.push(maxValue);
    return randomArray;
}

var ids1 = createRandomIntArray(100);
var ids2 = createRandomIntArray(1000);
var ids3 = createRandomIntArray(10000);

var target1 = createTargetArray(100, 99);
var target2 = createTargetArray(1000, 999);
var target3 = createTargetArray(10000, 9999);

Tests:

set
var idsSet1 = new Set(ids1) target1.some(id => idsSet1.has(id)) var idsSet2 = new Set(ids2) target2.some(id => idsSet2.has(id)) var idsSet3 = new Set(ids3) target3.some(id => idsSet3.has(id))
array
target1.some(id => ids1.includes(id)) target2.some(id => ids2.includes(id)) target3.some(id => ids3.includes(id))

Run results for: Set.has v.s Array.includes v2

set

array