Run results for: Array loop vs foreach vs map

Run details:

User agent: Mozilla/5.0 (iPhone; CPU iPhone OS 15_3_1 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Mobile/19D52 [FBAN/FBIOS;FBDV/iPhone14,3;FBMD/iPhone;FBSN/iOS;FBSV/15.3.1;FBSS/3;FBID/phone;FBLC/en_US;FBOP/5]

Browser: Mobile Safari 15

Operating system: iOS 15.3.1

Device Platform: Mobile

Date tested: 2 years ago

Test name	Executions per second
foreach	25796.9 Ops/sec
for	15313.8 Ops/sec
map	27424.5 Ops/sec

Script Preparation code:

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

Tests:

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