Run results for: Set vs Object vs Map vs Array, Access

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser: Chrome 122

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
Set	15559.7 Ops/sec
Object	21292.9 Ops/sec
Map	15232.0 Ops/sec
Array	26.2 Ops/sec

Script Preparation code:

var array = Array.from({length:10000},() => (()=>([1e7]+-1e3+-4e3+-8e3+-1e11).replace(/[018]/g,a=>(a^Math.random()*16>>a/4).toString(16)))())
var set = new Set(array);
var object = Object.fromEntries(array.map((k) => [k,true]))
var map = new Map(array.map((k) => [k,true]));

var randomAccess = [...array].sort(() => Math.random() -0.5).slice(0,1000)

Tests:

Set
for (const k of randomAccess) set.has(k)
Object
for (const k of randomAccess) object[k]
Map
for (const k of randomAccess) map.get(k)
Array
for (const k of randomAccess) array.includes(k)

Run results for: Set vs Object vs Map vs Array, Access

Compare the speed to retrieve a value from three data structures that can be used for boolean referencing; i.e. for mapping enabled settings.

Set

Object

Map

Array