Benchmark: Map vs Object.entries

Script Preparation code:

var obj = {
    1: "ASDASDASDASD",
    2: "ASDASDASDASDASDA",
    3: "ASDASDASDASDAAA",
    4: 5242,
    5: "AAAAAA",
    6: "asdasdasdasd",
    7: [24342343, "sweet", "hello"],
    8: [1, 2, 3, 4],
    9: [1, 2, 3, 4, 5],
    10: "AAA",
    11: 5545,
    12: "gutenTag"
}
var map = new Map(Object.entries(obj))

Tests:

map forEach
let total = 0 map.forEach((k, v) => { total += 1 })
map for of
let total = 0 for (const [key, val] of map){ total += 1 }
Object.entries for of
let total = 0 for (const [key, val] of Object.entries(obj)){ total += 1 }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map forEach
map for of
Object.entries for of

Fastest: N/A

Slowest: N/A

ⓘ Get performance results from real users on your website with Request Metrics.

Website Performance Monitoring by Request Metrics

Latest run results:

Run details: (Test run date: 25 days ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:126.0) Gecko/20100101 Firefox/126.0

Browser/OS: Firefox 126 on Windows

View result in a separate tab

Test name	Executions per second
map forEach	994339.8 Ops/sec
map for of	452865.1 Ops/sec
Object.entries for of	329369.4 Ops/sec

Map vs Object.entries (version: 0)

only on a small collection

Comparing performance of: map forEach vs map for of vs Object.entries for of

Created: 25 days ago by: Guest

Jump to the latest result

map forEach

map for of

Object.entries for of

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A