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

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/119.0.0.0 Safari/537.36 Edg/119.0.0.0

Browser: Chrome 119

Operating system: Windows

Device Platform: Desktop

Date tested: 2 years ago

Map

48.0M/s

Loop

41.3M/s

Loop push

29.6M/s

Array.from

16.1M/s

View exact numbers

Test name	Executions per second
✓ Map	48,007,036 Ops/sec
Loop	41,314,204 Ops/sec
Loop push	29,635,592 Ops/sec
Array.from	16,087,959 Ops/sec

Tests:

Array.from
Array.from({ length: 10 }, i => i)
Map
new Array(10).map(i => i);
Loop
const arr = new Array(10); for (let i = 0; i < 10; i++) arr[i] = i
Loop push
const arr = [] for (let i = 0; i < 10; i++) arr.push(i)