Run results for: Lodash vs Set Intersection vs includes vs indexOf

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/129.0.0.0 Safari/537.36

Browser: Chrome 129

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Javascript includes

25.1M/s

Javascript indexOf

23.9M/s

Lodash intersection

6.1M/s

Javascript Set intersection

5.8M/s

View exact numbers

Test name	Executions per second
✓ Javascript includes	25,087,220 Ops/sec
Javascript indexOf	23,883,730 Ops/sec
Lodash intersection	6,104,147 Ops/sec
Javascript Set intersection	5,819,657 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var first = [1, 3, 4, 5, 7];
var second = [2, 3, 5, 6];

Tests:

Lodash intersection
_.intersection(first, second)
Javascript includes
first.filter(a => second.includes(a))
Javascript indexOf
first.filter(a => second.indexOf(a) >= 0)
Javascript Set intersection
const firstSet = new Set(first); const secondSet = new Set(second); new Set([...firstSet].filter(item => secondSet.has(item)));