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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:147.0) Gecko/20100101 Firefox/147.0

Browser: Firefox 147

Operating system: Linux

Device Platform: Desktop

Date tested: 5 months ago

for

2.2M/s

forEach

1.8M/s

map

1.7M/s

for ... of

999K/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)