Benchmark: js array copy speed comparison... - MeasureThat.net

Tests:

map
const arr = [1,2,3,4,5] const newArr = arr.map(e=>e)
array.from
const arr = [1,2,3,4,5] const newArr = Array.from(arr)
...
const arr = [1,2,3,4,5] let newArr = [...arr];
slice
const arr = [1,2,3,4,5] const newArr = arr.slice()

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map
array.from
...
slice

Fastest: N/A

Slowest: N/A

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Latest run results:

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

User agent: Mozilla/5.0 (Linux; Android 12; SM-G998B) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Mobile Safari/537.36

Browser/OS: Chrome Mobile 110 on Android

View result in a separate tab

Test name	Executions per second
map	33875880.0 Ops/sec
array.from	2935069.0 Ops/sec
...	23932800.0 Ops/sec
slice	38549720.0 Ops/sec