Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:59.0) Gecko/20100101 Firefox/59.0
Firefox 59
Windows
Other
7 years ago
Test name Executions per second
for 2192568.8 Ops/sec
foreach 8286045.5 Ops/sec
some 8346004.5 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];
    });