for loop perf demo (v13)

Revision 13 of this benchmark created on

Setup

var obj = {};
    for (var i = 0; i < 100; i = i + 1) {
      var item = {
        index: i
      };
      obj[i] = item;
    }

Test runner

Ready to run.

Testing in
TestOps/sec
for loop heavy
var sum = 0;
for (var x = 0; x < obj.length; x++) {
  var keys = Object.keys(obj);
  sum += keys[x];
}
ready
for loop light
var sum = 0;
var keys = Object.keys(obj);
for (var x = 0; x < keys.length; x++) {
  sum += keys[x];
}
ready
asd
var sum = 0;
var keys = null;
for (var x = 0; x < obj.length; x++) {
  keys = Object.keys(obj);
  sum += keys[x];
}
ready

Revisions

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