Run results for: Array.from vs Array.fill

Run details:

User agent: Mozilla/5.0 (Linux; Android 10; K) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/131.0.6778.104 Mobile Safari/537.36

Browser: Chrome Mobile 131

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

fill

720/s

from

49/s

View exact numbers

Test name	Executions per second
✓ fill	720 Ops/sec
from	49 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)) }