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

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:122.0) Gecko/20100101 Firefox/122.0

Browser: Firefox 122

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: 2 years ago

Loop

41.3M/s

Map

41.0M/s

Loop push

36.2M/s

Array.from

14.6M/s

View exact numbers

Test name	Executions per second
✓ Loop	41,298,572 Ops/sec
Map	41,014,796 Ops/sec
Loop push	36,229,372 Ops/sec
Array.from	14,644,136 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)