从 AS2 到 AS3 _root 相当于什么？
我正在尝试学习 Actionscript 2 或 3，通过 AS2，我最终通过反复试验发现，我可以获取任何命名实例，并使用其名称的字符串对其进行修改，
var theinstance = "titletext"; // actually exctracted from an array
_root[theinstance].htmlText = "New text with <b>HTML!</b>";
但在尝试将代码转换为 AS3 _root 时 不再存在。 根据迁移文档，它以某种方式被flash取代.display.DisplayObject.stage 但显然这不是如何做到的：
flash.display.DisplayObject.stage[theinstance].htmlText = "New text with <b>HTML!</b>";
这也不是：
flash.display.DisplayObject.stage.getChildByName(theinstance).htmlText = "New text with <b>HTML!</b>";
How do I get a child by name in actionscript 3?
I'm trying to learn Actionscript 2 or 3, with AS2 I eventually figured by trial and error that I could get any named instance and modify it using a string with its name using
var theinstance = "titletext"; // actually exctracted from an array
_root[theinstance].htmlText = "New text with <b>HTML!</b>";
but when trying to convert the code to AS3 _root doesn't exist anymore. According to the migration doc it is somehow replaced by flash.display.DisplayObject.stage but apparently this is not how to do it:
flash.display.DisplayObject.stage[theinstance].htmlText = "New text with <b>HTML!</b>";
and neither is this:
flash.display.DisplayObject.stage.getChildByName(theinstance).htmlText = "New text with <b>HTML!</b>";
How do I get a child by name in actionscript 3?
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只需使用“root”（无下划线）或“stage”，具体取决于您想要执行的操作。
但是 - 为什么不只存储对数组中 textField 的引用而不是字符串呢？
Just use either "root" (no underscore) or "stage" depending on exactly what you want to do.
However - Why not just store a reference to the textField in the array instead of a string?
“flash.display.DisplayObject”实际上并不是您调用的实际代码的一部分。 相反，文档告诉您 stage 属性在 DisplayObject 类的任何实例上都可用 - 例如，movieClip 或 sprite。
例如，如果您有一个名为 foo 的 movieClip，您可以使用以下命令引用舞台：
并从那里开始。
"flash.display.DisplayObject" is not literally part of the actual code that you call. Rather, the documentation is telling you that the stage property is available on any instance of the DisplayObject class -- for example, a movieClip or a sprite.
For example, if you have a movieClip named foo, you could reference the stage with:
and go from there.