Run results for: Array Intersection vs. Set Intersection vs. Lodash - big

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36 Edg/131.0.0.0

Browser: Chrome 131

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Javascript Set intersection

3K/s

Lodash intersection

2K/s

Javascript Array intersection

652/s

View exact numbers

Test name	Executions per second
✓ Javascript Set intersection	3,125 Ops/sec
Lodash intersection	2,181 Ops/sec
Javascript Array intersection	652 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 = [...Array(10000)].map(it => ~~(Math.random() * 1000));
var second = [...Array(2220)].map(it => ~~(Math.random() * 1000));

Tests:

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