Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_2) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/75.0.3770.142 Safari/537.36
Chrome 75
Mac OS X 10.14.2
Desktop
5 years ago
Test name Executions per second
for 93525.9 Ops/sec
foreach 4485824.0 Ops/sec
some 4515613.0 Ops/sec
Script Preparation code:
AخA
 
var array = new Array(100);
Tests:
  • for

     
    for (var i = 0; i < array.length; i++) {
      array[i];
    }
  • foreach

     
    array.forEach(function(item, index) {
      return item;
    });
  • some

     
    array.some(function(item, index) {
      return item === array[index];
    });