Benchmark: Array.from vs map 1 - MeasureThat.net

Script Preparation code:

const LEN = 1e7;

Tests:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.from
Map
Loop
Loop push

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/126.0.0.0 Safari/537.36

Browser/OS: Chrome 126 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Array.from	3.3 Ops/sec
Map	22.3 Ops/sec
Loop	32.6 Ops/sec
Loop push	13.2 Ops/sec

Related benchmarks: