Benchmark: Benchmark javascript Object vs Map

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) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object Write
Map Write
Object Read
Map Read

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 2 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Linux

View result in a separate tab

Test name	Executions per second
Object Write	6476.3 Ops/sec
Map Write	5755.5 Ops/sec
Object Read	3265.4 Ops/sec
Map Read	3327.6 Ops/sec

Benchmark javascript Object vs Map (version: 2)

Benchmark javascript Object vs Map

Comparing performance of: Object Write vs Map Write vs Object Read vs Map Read

Created: one year ago by: Registered User

Jump to the latest result

Object Write

Map Write

Object Read

Map Read

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A