sparse arrays vs objects (v2)

Revision 2 of this benchmark created on

Setup

window.headl=[];
    for (var i = 0; i < 15; i++)
    headl[i] = i;
    window.obj = {};
    for (var i = 0; i < 15; i++)
    obj[i] = Math.random();
    window.arr = [];
    for (var i = 0; i < 15; i++)
    arr[i] = Math.random();

Test runner

Ready to run.

Testing in
TestOps/sec
object set
obj = {}
for (var i = 0; i < 500; i++)
obj[~~ (Math.random() * 1000)] = Math.random();
ready
array set
arr = [];
for (var i = 0; i < 500; i++)
arr[~~ (Math.random() * 1000)] = Math.random();
ready
object get
var result;
result = obj[headl[345]];
ready
array get
var result;
result = arr[345];
ready

Revisions

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