Run results for: Benchmark javascript Object vs Map

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36 OPR/96.0.0.0 (Edition Yx 08)

Browser: Opera 96

Operating system: Windows

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Object Write	1834.7 Ops/sec
Map Write	2067.5 Ops/sec
Object Read	1560.8 Ops/sec
Map Read	1567.7 Ops/sec

Script Preparation code:

var size = 1000
var map = new Map()
var object = {}

var emptyMap = new Map()
var emptyObject = {}

for (var i = 0; i < size; i++) {
    map.set(i, i)
    object[i] = i
}

Tests:

Object Write
for (var i=0; i<size; i++) { emptyObject[i] = i }
Map Write
for (var i=0; i<size; i++) { emptyMap.set(i,i) }
Object Read
for (var key in object) { a = object[key] }
Map Read
for (var [key, value] of map) { a = map.get(key) }

Run results for: Benchmark javascript Object vs Map

Benchmark javascript Object vs Map

Object Write

Map Write

Object Read

Map Read