Benchmark: Set vs Object vs Map vs Array (Iteration)

Script Preparation code:

const array = Array.from({ length: 10000 }, (_, idx) => idx);
const set = new Set(array);
const object = Object.fromEntries(array.map((x) => [x, true]));
const map = new Map(Object.entries(object));

Tests:

Set
let sum = 0; set.forEach((v) => { sum += v; });
Object
let sum = 0; for(const k in object){ const v = object[k] sum += v; }
Map
let sum = 0; map.forEach((v) => { sum += v; });
Array
let sum = 0; array.forEach((v) => { sum += v; });

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Set
Object
Map
Array

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Windows

View result in a separate tab

Test name	Executions per second
Set	18723.1 Ops/sec
Object	5439.7 Ops/sec
Map	16148.5 Ops/sec
Array	54223.5 Ops/sec

Related benchmarks:

Set vs Object vs Map vs Array (Iteration) (version: 1)

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

Comparing performance of: Set vs Object vs Map vs Array

Created: 5 months ago by: Guest

Jump to the latest result

Set

Object

Map

Array

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A