Fast Array Foreach (v88)

Revision 88 of this benchmark created by hiasltiasl on

Setup

// Populate the base array
      var arr = [];
      for (var i = 0; i < 1000; i++) {
        arr[i] = i;
      }
    
      function someFn(i) {
        return i * 3 * 8;
      }
    
      function myForEach(arr, func) {
        for (var i = 0, len = arr.length; i < len; i++)
          func(arr[i], i, arr);
      }
    
      function myForEachWithThisArg(arr, func, thisArg) {
        for (var i = 0, len = arr.length; i < len; i++)
          func.call(thisArg, arr[i], i, arr);
      }
    
      function myBestForEach(arr, func, thisArg) {
        return thisArg
          ? myForEachWithThisArg(arr, func, thisArg)
          : myForEach(arr, func);
      }

Test runner

Ready to run.

Testing in
TestOps/sec
Array.ForEach
arr.forEach(function (item){
  someFn(item);
})
ready
For
for (var i = 0, len = arr.length; i < len; i++) {
  someFn(arr[i]);
}
ready
direct forEach
arr.forEach(someFn);
ready
downward while
var i = arr.length;
while (i--)
  someFn(arr[i]);
ready
my forEach
myForEach(arr, someFn);
ready
my forEach with this-arg
myForEachWithThisArg(arr, someFn);
ready
my best forEach
myBestForEach(arr, someFn);
ready

Revisions

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