Run results for: js array copy speed comparison... - MeasureThat.net

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/16.0 Safari/605.1.15

Browser: Safari 16

Operating system: Mac OS X 10.15.7

Device Platform: Desktop

Date tested: 2 years ago

Test name	Executions per second
map	10773339.0 Ops/sec
array.from	5997460.5 Ops/sec
...	481129952.0 Ops/sec
slice	73633312.0 Ops/sec

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()