Run results for: JS fastest unique array Set vs uniq vs filter

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 10 months ago

Test name	Executions per second
Set	119801.7 Ops/sec
uniq	112792.3 Ops/sec
filter	133970.8 Ops/sec

HTML Preparation code:

<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var arr = [ 18, 2, 1, 13, 12, 7, 6, 0, 8, 15, 7, 9, 9, 18, 3, 18, 3, 9, 3, 8, 7, 12, 7, 14, 4, 19, 10, 5, 2, 19, 1, 14, 19, 18, 7, 12, 10, 2, 4, 11, 9, 4, 12, 2, 18, 6, 7, 10, 9, 3, 11, 9, 2, 12, 15, 0, 14, 3, 5, 18, 16, 16, 9, 15, 5, 9, 16, 6, 13, 4, 19, 5, 11, 18, 18, 6, 19, 5, 4, 2, 3, 4, 11, 9, 16, 17, 10, 15, 14, 7, 11, 0, 5, 13, 7, 14, 13, 16, 9, 19, 4, 0, 4, 0, 5, 2, 15, 15, 13, 10, 3, 8, 18, 7, 10, 4, 4, 16, 14, 1, 4, 19, 1, 14, 15, 16, 5, 4, 0, 0, 12, 0, 4, 7, 0, 4, 1, 9, 14, 12, 12, 1, 2, 6, 0, 10, 6, 19, 12, 4, 7, 11, 13, 2, 1, 19, 9, 6, 15, 9, 2, 11, 14, 5, 18, 13, 16, 19, 8, 12, 12, 4, 5, 1, 10, 19, 0, 2, 6, 19, 4, 19, 7, 18, 18, 5, 16, 18, 13, 8, 9, 4, 14, 12, 10, 10, 19, 11, 8, 9, 13, 6, 0, 10, 6, 6, 5, 8, 3, 18, 11, 12, 3, 14, 12, 8, 7, 12, 6, 4, 4, 2, 19, 17, 14, 11, 2, 16, 13, 10, 19, 9, 18, 12, 9, 16, 6, 14, 13, 15, 2, 15, 19, 9, 19, 0, 5, 11, 0, 15, 17, 0, 9, 18, 0, 15, 11, 4, 3, 9, 2, 18, 18, 6, 19, 11, 3, 0, 7, 5, 9, 3, 11, 18, 0, 10, 1, 8, 1, 18, 7, 3, 0, 13, 11, 7, 10, 5, 19, 11, 4, 4, 0, 18, 9, 3, 3, 19, 9, 4, 16, 13, 13, 14, 18, 12, 17, 2, 12, 1, 13, 12, 11, 8, 18, 14, 5, 18, 0, 3, 5, 17, 3, 16, 3, 11, 16, 19, 13, 11, 2, 15, 6, 12, 0, 13, 2, 2, 16, 17, 10, 18, 3, 18, 5, 18, 3, 8, 0, 4, 13, 9, 18, 7, 15, 12, 3, 11, 3, 8, 12, 6, 10, 3, 2, 18, 3, 19, 10, 19, 13, 19, 15, 2, 14, 18, 15, 10, 18, 19, 7, 10, 3, 16, 7, 7, 8, 19, 1, 15, 9, 18, 18, 5, 14, 11, 11, 14, 5, 2]

Tests:

Set
var u = new Set(arr); return u;
uniq
var u = _.uniq(arr) return u;
filter
var u = arr.filter((v, i, a) => a.indexOf(v) === i) return u;

Run results for: JS fastest unique array Set vs uniq vs filter

Compare performance between Set, lodash uniq, filter

Set

uniq

filter