MeasureThat.net

Run results for: another one js array copy speed comparison

Go to the benchmark
Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36 Edg/105.0.1343.53
Chrome 105
Windows
Desktop
2 years ago
Test name Executions per second
map 46589196.0 Ops/sec
array.from 3543141.0 Ops/sec
for loop 30280118.0 Ops/sec
foreach 28612370.0 Ops/sec
slice 87308640.0 Ops/sec
spread 54897560.0 Ops/sec
filter 34008588.0 Ops/sec
concat 47392600.0 Ops/sec
Tests:

  • map

    AخA
     
    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

    ​x
     
    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()

  • spread

     
    const arr = [1,2,3,4,5]
    const newArr = [...arr]

  • filter

     
    const arr = [1,2,3,4,5]
    const newArr = arr.filter(() => true)

  • concat

     
    const arr = [1,2,3,4,5]
    const newArr = [].concat(arr)