Run results for: Set string vs number (100k)

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
String Set	27.2 Ops/sec
Index Set	75.6 Ops/sec

Script Preparation code:

function generateUUIDs(n) {
    const uuids = [];
    for (let i = 0; i < n; i++) {
        uuids.push(crypto.randomUUID());
    }
    return uuids;
}

// Example usage:
const numberOfUUIDs = 100000;
var uuids = generateUUIDs(numberOfUUIDs);

Tests:

String Set
const set = new Set() for (let index = 0; index < uuids.length; index++) { const uuid = uuids[index] set.add(uuid) } for (let index = 0; index < uuids.length; index++) { const uuid = uuids[index] set.add(uuid) }
Index Set
const set = new Set() for (let index = 0; index < uuids.length; index++) { set.add(index) } for (let index = 0; index < uuids.length; index++) { set.add(index) }

Run results for: Set string vs number (100k)

Compare Set with string and number

String Set

Index Set