让我们说，我有一个类Foo：

Let's say that I have a class Foo:

public class Foo
{

   public static var bar:String = "test";

}

使用字符串foo或/和和实例美孚和字符串bar我怎么可以参考一下吧在运行时？

How can I reference bar at runtime using the string "Foo" or/and and instance of Foo and the string "bar"?

即。

var x:Object = new Foo();
...
x["bar"]

...不工作，在的IntelliJ调试模式下得到了我的hopesup，酒吧被列为一个属性。

...doesn't work, debug mode in IntelliJ got my hopesup as bar gets listed as a property.

更新：

请注意，在点行动我不知道FOO在编译的时候什么。我需要通过字符串富和栏，以解决Foo.bar。

Note that at the "point of action" I don't know anything about foo in compile time. I need to resolve Foo.bar through the strings "Foo" and "bar".

放不同，如柔性没有的eval我怎么能accomplishe一样的eval（Foo.bar​​）？

Of put differently, as flex don't have eval how can I accomplishe the same as eval("Foo.bar")?

推荐答案

这是一个静态变量，所以你将不能够使用的实例来访问它的FOO的;它的静态访问，使用ClassName.variableName符号，像这样：

It's a static variable, so you won't be able to access it using an instance of foo; it's accessed statically, using ClassName.variableName notation, like so:

跟踪（Foo.bar）;

trace(Foo.bar);

//收益：测试

为好，因为你已经声明为Foo和公示栏，你应该能够从任何地方访问Foo.bar这样在你的应用程序。

As well, because you've declared both Foo and bar public, you should be able to access Foo.bar that way from anywhere in your application.

更新：啊，我知道你在问什么。您可以使用flash.utils.Summary.getDefinitionByName（）：

Update: Ah, I see what you're asking. You can use flash.utils.Summary.getDefinitionByName():

// Either this way
trace(getDefinitionByName("Foo").bar);

// Or this
trace(getDefinitionByName("Foo")["bar"]);

...后者得益于杰里米的答案，这是新的我。 ：）

... the latter thanks to Jeremy's answer, which was new to me. :)