Fast Array Foreach (v122)

Revision 122 of this benchmark created 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;
      }
    
    Array.prototype.for=function(a){
          for(var i=0,l=this.length;i<l;i++)a(this[i],i)
        }

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
Array.prototype.for
arr.for( someFn )
ready
Array in
var ele;
for(ele in arr){
someFn( ele );
}
ready

Revisions

You can edit these tests or add more tests to this page by appending /edit to the URL.