Object keys iteration array (v89)

Revision 89 of this benchmark created on

Description

Testing Object.keys vs for-in. I see that SlickGrid uses objects with indexed keys rather than arrays. Confused....

Preparation HTML

<script>
  var data = {};
  var array = []
  
  for (var i = 0; i < 5; i++) {
  
   data[i] =  'user ' + i;
  array[i] =  'user ' + i;
  }
</script>

Test runner

Ready to run.

Testing in
TestOps/sec
for-in
for (var key in data) {
   data[key];
}
ready
object-keys
Object.keys(data).forEach(function(element, index, array){
  data[element];
});
ready
object-keys 2
var len = array.length

for (var i = 0; i < len; i++) {
  array[i];
}
ready
object-keys 3
var keys = Object.keys(data);
var len = keys.length;
var i;

for (i = 0; i < len; i++) {
  data[keys[i]];
}
ready

Revisions

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