Run results for: Array loop vs foreach vs map

Run details:

User agent: Mozilla/5.0 (Linux; U; Android 10; en-gb; MI 8 Build/QKQ1.190828.002) AppleWebKit/537.36 (KHTML, like Gecko) Version/4.0 Chrome/71.0.3578.141 Mobile Safari/537.36 XiaoMi/MiuiBrowser/12.3.5-g

Browser: Chrome Mobile 71

Operating system: Android

Device Platform: Mobile

Date tested: 4 years ago

Test name	Executions per second
foreach	5462.4 Ops/sec
for	3076.8 Ops/sec
map	1888.8 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))