Run details:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36
Chrome 110
Windows
Desktop
one year ago
Test name Executions per second
for 16.4 Ops/sec
foreach 379.7 Ops/sec
some 348.8 Ops/sec
every 348.5 Ops/sec
for..of 13.8 Ops/sec
map 188.7 Ops/sec
Script Preparation code:
AخA
 
var array = new Array(1000000);
Tests:
  • for

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

     
    array.forEach(function(i) {
      array[i];
    });
  • some

     
    array.some(function(i) {
      array[i];
    });
  • every

     
    array.every(function(i) {
      array[i];
    });
  • for..of

     
    for (var i of array) {
      array[i];
    }
  • map

     
    array.map(a => a);