Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_14_3) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/73.0.3683.103 Safari/537.36
Chrome 73
Mac OS X 10.14.3
Desktop
5 years ago
Test name Executions per second
for 762.1 Ops/sec
foreach 58360.6 Ops/sec
some 58629.7 Ops/sec
Script Preparation code:
AخA
 
var array = new Array(10000);
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];
    });