In Javascript, object properties are not ordered: http://stackoverflow.com/a/5525820/96855 http://stackoverflow.com/a/5525820/96855. The Map object would be clo

In Javascript, object properties are not ordered: http://stackoverflow.com/a/5525820/96855 http://stackoverflow.com/a/5525820/96855. The Map object would be closer: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map https://developer.mozilla.org/en-US/docs/Web/JavaScript/Refe...