Run results for: map vs object 2 2 2 2

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

Benchmark engine: Benchmark.js

map

863K/s

object

529K/s

View exact numbers

Test name	Executions per second
✓ map	862,646 Ops/sec
object	528,593 Ops/sec

Tests:

map
var map = new Map() var key1 = String(Math.random()) var key2 = String(Math.random()) map.set(key1, key1) map.set(key2, key2) var times = 8 while (times--) { map.get(Math.random() > 0.5 ? key1 : key2) }
object
var obj = {} var key1 = String(Math.random()) var key2 = String(Math.random()) obj[key1] = key1 obj[key2] = key2 var times = 8 while (times--) { obj[Math.random() > 0.5 ? key1 : key2] }