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Run results for:
js array copy speed comparison
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Run details:
User agent:
Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/127.0.0.0 Safari/537.36
Browser:
Chrome 127
Operating system:
Linux
Device Platform:
Desktop
Date tested:
one year ago
Test name
Executions per second
map
86668704.0 Ops/sec
array.from
11851660.0 Ops/sec
for loop
54218552.0 Ops/sec
foreach
58425040.0 Ops/sec
slice
99656160.0 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)
for loop
const arr = [1,2,3,4,5] let newArr = []; for(let i = 0; i < arr.length; i++) { newArr[i] = arr[i]; }
foreach
const arr = [1,2,3,4,5] let newArr = [] arr.forEach(e => { newArr.push(e) })
slice
const arr = [1,2,3,4,5] const newArr = arr.slice()