Run results for: Array vs. Set Intersection #2

Run details:

User agent: Mozilla/5.0 (Android 13; Mobile; rv:141.0) Gecko/141.0 Firefox/141.0

Browser: Firefox Mobile 141

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Array intersection

2.9M/s

Javascript Set intersection

2.1M/s

View exact numbers

Test name	Executions per second
✓ Array intersection	2,939,479 Ops/sec
Javascript Set intersection	2,125,313 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];

var firstSet = new Set(first);
var secondSet = new Set(second);

Tests:

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