Benchmark: Map loop - MeasureThat.net

Script Preparation code:

var map = new Map()
for (let i = 0; i < 10000; i ++) {
  map.set(i, { text: 'a' + i })
}

var obj = []
for (let i = 0; i < 10000; i ++) {
  map[i] = { text: 'a' + i }
}

Tests:

forEach
map.forEach(v => { v.text += 'f' })
for of
for (let v of map) { v.text += 'o' }
obj keys
const keys = Object.keys(obj) for (let i = 0; i < keys.length; i ++) { obj[keys[i]].text += 'k' }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
forEach
for of
obj keys

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Browser/OS: Chrome 104 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
forEach	2619.8 Ops/sec
for of	183.1 Ops/sec
obj keys	8602092.0 Ops/sec

Map loop (version: 0)

Comparing performance of: forEach vs for of vs obj keys

Created: one year ago by: Registered User

Jump to the latest result

forEach

for of

obj keys

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A