Benchmark: loops-forin-forof-native-4

Script Preparation code:

var arr = [];
const randomizeArray = () => {
	for	(let i = 0; i < 50000; i++) {
		arr[i] = Math.floor(Math.random() * 100000);
	}
}

randomizeArray();

Tests:

for-in
let dummy = 0; for (let j = 0; j < 100; j++){ for (let i in arr) { dummy += i; } }
for-of
let dummy = 0; for (let j = 0; j < 100; j++){ for (let i of arr) { dummy += i; } }
native
let dummy = 0; for (let j = 0; j < 100; j++){ for (let i = 0; i < arr.length; i++) { dummy += arr[i]; } }
native - cache lengh
let dummy = 0; for (let j = 0; j < 100; j++){ let length = arr.length; for (let i = 0; i < length; i++) { dummy += arr[i]; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
for-in
for-of
native
native - cache lengh

Fastest: N/A

Slowest: N/A

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Latest run results:

Run details: (Test run date: 5 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.86 Safari/537.36

Browser/OS: Chrome 73 on Windows

View result in a separate tab

Test name	Executions per second
for-in	1.3 Ops/sec
for-of	227.2 Ops/sec
native	1.8 Ops/sec
native - cache lengh	3.5 Ops/sec

loops-forin-forof-native-4 (version: 3)

Comparing performance of: for-in vs for-of vs native vs native - cache lengh

Created: 5 years ago by: Registered User

Jump to the latest result

for-in

for-of

native

native - cache lengh

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A