Run results for: bigArray uniq vs set vs reduce few duplicate

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36 Edg/126.0.0.0

Browser: Chrome 126

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Array from Set

7K/s

Lodash Uniq

6K/s

Array reduce

4K/s

View exact numbers

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

var testArr = Array.from({length: 10000}, () => Math.floor(Math.random() * 50))

Tests:

Array from Set
[...new Set(testArr)]
Lodash Uniq
_.uniq(testArr)
Array reduce
testArr.reduce((ids, cid) => {return ids.some((pid) => pid === cid) ? ids : ids.concat(cid);}, [])