Run results for: Array loop vs foreach vs map

Run details:

User agent: Mozilla/5.0 (Linux; Android 9; RMX1805) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.6099.230 Mobile Safari/537.36 OPR/80.1.4244.77335

Browser: Opera Mobile 80

Operating system: Android

Device Platform: Mobile

Date tested: 2 years ago

Benchmark engine: Benchmark.js

foreach

2K/s

map

1K/s

for

861/s

View exact numbers

Test name	Executions per second
✓ foreach	1,571 Ops/sec
map	1,452 Ops/sec
for	861 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))