Chrome and probably Opera sort object properties automatically

Question

Problem is: Chrome automatically sorts properties of object.

If I have an object like:

var obj = {4: \"first\", 2: \"second\", 1: \"third\"};
         


        

Answer 1

You should not expect any particular order for keys in for..in loops. From the MDC docs:

A for...in loop iterates over the properties of an object in an arbitrary order

If you want ordering using numerical keys, use an array.