Run results for: Array.from vs map vs Array.from then map - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36

Browser: Chrome 120

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array.from	40141.9 Ops/sec
Map	556190.8 Ops/sec
Loop	997028.4 Ops/sec
Loop push	464872.0 Ops/sec
Array.from and Map	41948.0 Ops/sec

Tests:

Array.from
Array.from({ length: 1000 }, i => i)
Map
new Array(1000).map(i => i);
Loop
const arr = new Array(1000); for (let i = 0; i < 1000; i++) arr[i] = i
Loop push
const arr = [] for (let i = 0; i < 1000; i++) arr.push(i)
Array.from and Map
Array.from({ length: 1000 }).map(i => i);