How to iterate over numerically named object properties in defined order?
<p>In theory, the order of iteration over object properties is not guaranteed. 
In practice, there is a de-facto standard about it.
IE&lt;9, Firefox, Safari always iterate in the order of definition.
Opera, IE9, Chrome iterate in the order of definition for string keys.
Numeric keys become sorted and go before string keys.</p>

<p>I have an object-filled array, the all keys are numbers. How can I iterate over those object properties in defined order. In ie9 and chrome, the numeric keys are always sorted before iteration.</p>
