尝试编译：

var object:Object = {};

object.one = "foo";
object.two = "foo";
object.three = "foo";
object.four = "foo";

for(var key:String in object)
{
    trace(key);
}

...您将获得：

... you will get:

one
four
two
three

为什么搞砸了订单？

Why the messed up order?

推荐答案

对象的键没有顺序。如果您需要preserve秩序，有查找，那么你需要创建一个自定义集合，提供了该功能。

The keys of an object are not ordered. If you need to preserve order and have a lookup, then you need to create a custom collection that provides that functionality.