Run results for: Array.from vs Array.fill

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser: Chrome 121

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 11 months ago

Test name	Executions per second
from	78.7 Ops/sec
fill	874.2 Ops/sec

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(5).fill(0).map(i => i + 1)) }