Run results for: Object vs map incrementing

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Benchmark engine: Benchmark.js

Object

1K/s

Map

94/s

View exact numbers

Test name	Executions per second
✓ Object	1,035 Ops/sec
Map	94 Ops/sec

Tests:

Object
const person = { name: "Alice" } const obj = { [person.name]: 0 } for (let i = 0; i < 1000000; i++) { obj[person.name]++ }
Map
const person = { name: "Alice" } const map = new Map() map.set(person.name, 0) for (let i = 0; i < 1000000; i++) { map.set(person.name, map.get(person.name) + 1) }