Run results for: for vs for ... of vs forEach vs map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.0.0 Safari/537.36

Browser: Chrome 131

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

for ... of

4.5M/s

map

4.1M/s

forEach

2.8M/s

for

1.1M/s

View exact numbers

Script Preparation code:

const array = Array.from({ length: 100 }, (_, i) => i)
const result = []

Tests:

for
const result = [] for (let i = 0; i < array.length; i++) { result.push(array[i] * 2) }
for ... of
const result = [] for (const value of array) { result.push(value * 2) }
forEach
const result = [] array.forEach((value) => { result.push(value * 2) })
map
const result = array.map((value) => value * 2)