Benchmark Run Result for: Array loop vs foreach vs map proper

Array loop vs foreach vs map proper

Date tested: 4 years ago

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:76.0) Gecko/20100101 Firefox/76.0

Test name	Executions per second
foreach	201248.3 Ops/sec
for	94582.7 Ops/sec
map	46897.5 Ops/sec

Benchmark definition (click to collapse):

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; i < arr.length; i++) { someFn(arr[i]); }
map
arr.map(item => someFn(item))

Open this result on MeasureThat.net