Run results for: Set vs Filter for unique vs for string and numbers

Run details:

User agent: Mozilla/5.0 (Linux; Android 9) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/93.0.4577.58 Mobile Safari/537.36

Browser: Chrome Mobile 93

Operating system: Android

Device Platform: Mobile

Date tested: 3 years ago

Test name	Executions per second
Set spread num	20583.6 Ops/sec
Array from set	20667.8 Ops/sec
Filter	3285.7 Ops/sec
Create Set	21963.2 Ops/sec
For	2851.8 Ops/sec
Set array	12884.3 Ops/sec
Array set string	20710.8 Ops/sec
For string	1489.4 Ops/sec
Create set string	13230.6 Ops/sec
Filter string	813.0 Ops/sec
Filter string small	52506.7 Ops/sec
Filter number small	57008.0 Ops/sec
Create set small string	110778.3 Ops/sec
Create set small	117825.5 Ops/sec
For string small	15265.0 Ops/sec
For small	18952.4 Ops/sec
Array set small string	93236.0 Ops/sec
Array set small	102678.7 Ops/sec
Spread set small	111526.5 Ops/sec
Spread set small string	102360.2 Ops/sec

Script Preparation code:

var array = Array.from({length: 410}, () => Math.floor(Math.random() * 140));

var arrayA = Array.from({length: 410}, () => Math.random().toString(36).substring(2, 15));

var arrayS = Array.from({length: 40}, () => Math.floor(Math.random() * 140));

var arraySA = Array.from({length: 40}, () => Math.random().toString(36).substring(2, 15));

Tests:

Set spread num
const f = [... new Set(array)]
Array set small
const la = Array.from(new Set(arrayS))
Array set small string
const la = Array.from(new Set(arraySA))
For small
const sa ={} const lca = [] for(let i =0; i < arrayS.length; i++){ if (sa[arrayS[i]]) { continue } sa[arrayS[i]] = 1 lca.push(sa[arrayS[i]]) }
For string small
const sa ={} const lca = [] for(let i =0; i < arraySA.length; i++){ if (sa[arraySA[i]]) { continue } sa[arraySA[i]] = 1 lca.push(sa[arraySA[i]]) }
Create set small
const scsdf = new Set(arrayS)
Create set small string
const scsdfa = new Set(arraySA)
Filter number small
const baas = arrayS.filter((i,index) => arrayS.indexOf(i)=== index)
Filter string small
const baa = arraySA.filter((i,index) => arraySA.indexOf(i)=== index)
Filter string
const ba = arrayA.filter((i,index) => arrayA.indexOf(i)=== index)
Create set string
const sc = new Set(arrayA)
For string
const sa ={} const lca = [] for(let i =0; i < arrayA.length; i++){ if (sa[arrayA[i]]) { continue } sa[arrayA[i]] = 1 lca.push(sa[arrayA[i]]) }
Array set string
const la = Array.from(new Set(array))
Set array
const z = [... new Set(arrayA)]
For
const s ={} const lc = [] for(let i =0; i < array.length; i++){ if (s[array[i]]) { continue } s[array[i]] = 1 lc.push(s[array[i]]) }
Create Set
const ss = new Set(array)
Filter
const b = array.filter((i,index) => array.indexOf(i)=== index)
Array from set
const l = Array.from(new Set(array))
Spread set small
const z = [... new Set(arrayS)]
Spread set small string
const z = [... new Set(arraySA)]

Run results for: Set vs Filter for unique vs for string and numbers

Set spread num

Array set small

Array set small string

For small

For string small

Create set small

Create set small string

Filter number small

Filter string small

Filter string

Create set string

For string

Array set string

Set array

For

Create Set

Filter

Array from set

Spread set small

Spread set small string