for loop perf demo

Benchmark created by Abraham 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 < 100; x++){
  var keys = Object.keys(obj);
  sum = sum + keys[x];
}
ready
for loop light
var sum = 0;
var keys = Object.keys(obj);
for(var x = 0; x < 100; x++){
  sum = sum + keys[x];
}
ready

Revisions

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