Performance of Array vs. Object (v231)

Revision 231 of this benchmark created on

Setup

var arr = [],
      i,
      obj = {};
  for(i = 0; i < 10; i += 1) {
      var o = {payload:i};
      arr.push(o);
      obj[i] = o;
  }

Test runner

Ready to run.

Testing in
TestOps/sec
Array Performance
var sum = 0;
var p=0
while(p=arr.shift()) {
    sum += p.payload;
}
ready
Array Perfomance with index
var sum = 0;
var kkk=arr.length;
for (var x=0; x<kkk; ++x) {
    sum += arr[x].payload;
}
ready
Object Performance using known length
var sum = 0;
var p=0;
var x=-1;
while(p=obj[x++]) {
    sum += p.payload;
}
ready
Using Object.keys()
var sum = 0;
var keys = Object.keys(obj);
for (var x=0; x< keys.length; ++x) {
    sum += obj[keys[x]].payload
}
ready

Revisions

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