Run results for: Set.difference vs Filter + includes

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/132.0.0.0 Safari/537.36

Browser: Chrome 132

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Arrays

697K/s

Sets

344K/s

View exact numbers

Test name	Executions per second
✓ Arrays	697,001 Ops/sec
Sets	344,492 Ops/sec

Script Preparation code:

const array1 = Array.from({length: 100}, () => Math.floor(Math.random() * 140));
const array2 = Array.from({length: 100}, () => Math.floor(Math.random() * 140));

Tests:

Sets
const set1 = new Set(array1); const set2 = new Set(array2); set1.difference(set2);
Arrays
array1.filter((id) => !array2.includes(id));