Run results for: small set vs array lookup 2

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36

Browser: Chrome 136

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

set

58.1M/s

array

32.4M/s

View exact numbers

Test name	Executions per second
✓ set	58,070,392 Ops/sec
array	32,367,820 Ops/sec

Script Preparation code:

const a = [1, 2];
const b = new Set(a);
const items = [1, 2, 3];

Tests:

array
const pick = items[Math.floor(Math.random() * items.length)]; a.includes(pick);
set
const pick = items[Math.floor(Math.random() * items.length)]; b.has(pick);