Object delete vs. array splice vs. array delete (v2)

Revision 2 of this benchmark created on

Description

Is it faster to remove an item from an array (and thus allow the indices to be renumbered) or delete a property from an object. Also, checking deletion from array, but this does not renumber the indices so may not be preferable.

Preparation HTML

<script>
  var someArr, someObj;
</script>

Setup

someArr = [4, 5, 6];
    someObj = {a: 4, b: 5, c: 6};

Test runner

Ready to run.

Testing in
TestOps/sec
Splice
someArr.splice(1, 1);
ready
Object Delete
delete someObj.b;
ready
Array Delete
delete someArr[1];
ready
Object sub-script Delete
delete someObj['b'];
ready
Array indexOf splice
someArr.splice(someArr.indexOf(5), 1);
ready

Revisions

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