Run results for: Array loop vs foreach vs map into array

Run details:

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:109.0) Gecko/20100101 Firefox/113.0

Browser: Firefox 113

Operating system: Mac OS X 10.15

Device Platform: Desktop

Date tested: one year ago

Script Preparation code:

   var arr = [];
    for (var i = 0; i < 1000; i++) {
      arr[i] = i;
    }
  
    function someFn(i) {
      return i * 3 * 8;
    }

Tests:

foreach
let newArray = [] arr.forEach(function (item){ newArray.push(someFn(item)); })
for
let newArray = [] for (var i = 0, len = arr.length; i < len; i++) { newArray.push(someFn(arr[i])); }
map
let newArray = arr.map(item => someFn(item))