Run results for: Lodash vs. Set Intersection vs Loop with Set

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/135.0.0.0 Safari/537.36

Browser: Chrome 135

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Loop with Set

18.7M/s

Lodash intersection

12.2M/s

Javascript Set intersection

8.2M/s

View exact numbers

Test name	Executions per second
✓ Loop with Set	18,742,286 Ops/sec
Lodash intersection	12,215,727 Ops/sec
Javascript Set intersection	8,210,030 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:

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)
Loop with Set
const firstSet = new Set(first); second.filter(item => firstSet.has(item));