Run results for: Array.from vs Array.fill vs [...Array].map

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/145.0.0.0 Safari/537.36

Browser: Chrome 145

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 5 months ago

fill

822/s

spread

670/s

from

79/s

View exact numbers

Tests:

from
let n = 10000, length = 50 const result = [] for (let i = 0; i < n; ++i) { result.push(Array.from({length:length}).map((_, i) => i + 1)) }
fill
let n = 10000, length = 50 const result = [] for (let i = 0; i < n; ++i) { result.push(Array(length).fill(0).map((_,i) => i + 1)) }
spread
let n = 10000, length = 50 const result = [] for (let i = 0; i < n; ++i) { result.push([...Array(length)].map((_,i) => i + 1)) }