Run results for: Array Intersection vs. Set Intersection vs. Lodash part 4

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/92.0.4515.159 Safari/537.36

Browser: Chrome 92

Operating system: Mac OS X 10.14.6

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Lodash intersection	319312.2 Ops/sec
Javascript Array intersection - filter	98532.3 Ops/sec
Javascript Array intersection - loop	153291.7 Ops/sec
Javascript Set intersection - filter	99804.6 Ops/sec
Javascript Set intersection - loop	418040.7 Ops/sec

HTML Preparation code:

<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.15/lodash.min.js'></script>

Script Preparation code:

var first = [...Array(100)].map(it => ~~(Math.random() * 1000));
var second = [...Array(20)].map(it => ~~(Math.random() * 1000));

var firstSet = new Set(first);
var secondSet = new Set(second);

Tests:

Lodash intersection
_.intersection(first, second)
Javascript Array intersection - filter
first.filter(it => second.includes(it))
Javascript Array intersection - loop
let _intersection = new Array() for (let elem of second) { if (first.indexOf(elem) > -1) { _intersection.push(elem) } } return _intersection
Javascript Set intersection - filter
new Set([...firstSet].filter(item => secondSet.has(item)));
Javascript Set intersection - loop
let _intersection = new Set() for (let elem of secondSet) { if (firstSet.has(elem)) { _intersection.add(elem) } } return _intersection

Run results for: Array Intersection vs. Set Intersection vs. Lodash part 4

Lodash intersection

Javascript Array intersection - filter

Javascript Array intersection - loop

Javascript Set intersection - filter

Javascript Set intersection - loop