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

Run details:

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:109.0) Gecko/20100101 Firefox/109.0

Browser: Firefox 109

Operating system: Linux

Device Platform: Desktop

Date tested: one year ago

Test name	Executions per second
Array.from	81750.7 Ops/sec
Map	54384.7 Ops/sec
Loop	92279.3 Ops/sec
Loop push	74230.5 Ops/sec
Array.from and Map	42127.6 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);