Run results for: Array loop vs foreach vs map vs for..of

Run details:

User agent: Mozilla/5.0 (Linux; Android 12; SAMSUNG SM-S908B) AppleWebKit/537.36 (KHTML, like Gecko) SamsungBrowser/18.0 Chrome/99.0.4844.88 Mobile Safari/537.36

Browser: Chrome Mobile 99

Operating system: Android

Device Platform: Mobile

Date tested: one year ago

Test name	Executions per second
foreach	6188.7 Ops/sec
for	3249.2 Ops/sec
map	5596.1 Ops/sec
for..of	6600.1 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))
for..of
for (const item of arr) { someFn(item); }