Chrome re-ordering object keys if numerics, is that normal/expected

Question

I noticed that certain code that evaluates some shoe sizes for an e-commerce site and outputs them on screen is messing up the order in Chrome.

JSON given can be:

Answer 1

I found an easy work around using underscore.js

myArray = _.sortBy(myArray, function(num){ return Math.ceil(num); });

Yay! myArray is back to the correct order in all browsers.