什么是JavaScript和ActionScript 3的之间的主要区别是什么？ [英] What are the key differences between JavaScript and ActionScript 3?
问题描述
我知道这两种语言都来自同一个ECMA-262标准。看来，这两个正在成为使用JavaScript通过方法添加事件侦听器的核心对象实例，如冻结非常相似和封印在EMCAScript-262第5版和这样的。我想知道的区别是什么？
I know both languages are from the same ECMA-262 standard. It seems that the two are becoming very similar with JavaScript adding event listeners for core Object instances through methods like freeze and seal in EMCAScript-262 5th edition and such. I was wondering what the differences are?
推荐答案
首先，所有ActionScript 3和JavaScript中的 ECMA-262 所以他们有很多共同点。这两种语言功能原型继承的实例。然而不正确的动作完全实现<一个href="http://docs.google.com/viewer?url=http://www.ecmascript.org/es4/spec/overview.pdf">ES4.
First of all ActionScript 3 and JavaScript are both defined in ECMA-262 so they have a lot in common. Both languages feature prototype inheritance for instance. It is however not correct that ActionScript fully implements ES4.
动作实现了几个未在ECMA-262定义和功能方面的一些 - 但绝对不是全部 - ES4的
ActionScript implements a couple of features that are not defined in ECMA-262 and some -- but definitely not all -- of ES4.
那么，是什么AS3添加到ECMA-262？这些也是差异的JavaScript：
So what does AS3 add to ECMA-262? Those are also the differences to JavaScript:
- 在动态和静态类型code
- 在包，类和接口
- 在标准的面向对象的继承模式（而不是基于原型的，静态类型）
- UINT与int数据类型
- 在E4X（ECMA-357）
- 类型安全的条件编译（ES4）
- 矢量＆lt; T＆GT;数据类型（ES4）
也许我已经忘记了某些功能。我不知道如果XML，返回XMLList等已经定义在262或带着357。
Maybe I have forgotten some features. I am not sure if XML, XMLList etc. are already defined in 262 or came with 357.
关键的区别不过是标准库。 JavaScript的带有一对夫妇predefined类，如DOMElement和浏览器相关的补充的。动作有一个与像视频流媒体功能相当庞大的标准库，并在所有平台上是一致的。
The key difference however is the standard library. JavaScript comes with a couple of predefined classes like DOMElement and browser dependent additions. ActionScript has a fairly large standard library with features like video streaming and is consistent over all platforms.
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