Run details:
Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/65.0.3325.181 Safari/537.36
Chrome 65
Mac OS X 10.12.6
Desktop
6 years ago
Test name Executions per second
for 56607.4 Ops/sec
foreach 2907275.5 Ops/sec
some 1337649.1 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];
    });