ActionScript - Revision history

imported>TarnishedPath: Per page move: Changed link from Class (computer programming) to Class (programming) using MovePlus

2025-10-17T09:10:30Z

Per page move: Changed link from Class (computer programming) to Class (programming) using MovePlus

← Previous revision		Revision as of 09:10, 17 October 2025
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	* '''Flash Player 5''': Included in the first version of ActionScript, it used [[prototype-based programming]] based on ECMAScript,<ref>{{cite web\|url=http://www.ecma-international.org/publications/standards/Ecma-262.htm \|title=Standard ECMA-262 \|publisher=Ecma-international.org \|access-date=April 22, 2013}}</ref> and allowed full [[procedural programming]] and object-oriented programming. Design based development.		* '''Flash Player 5''': Included in the first version of ActionScript, it used [[prototype-based programming]] based on ECMAScript,<ref>{{cite web\|url=http://www.ecma-international.org/publications/standards/Ecma-262.htm \|title=Standard ECMA-262 \|publisher=Ecma-international.org \|access-date=April 22, 2013}}</ref> and allowed full [[procedural programming]] and object-oriented programming. Design based development.
	* '''Flash Player 6''' added an event-handling model, accessibility controls, and support for [[switch statement\|switch]]. The first version with support for the [[Action Message Format]] (AMF) and [[Real-Time Messaging Protocol]] (RTMP) allowed for on demand audio/video streaming.		* '''Flash Player 6''' added an event-handling model, accessibility controls, and support for [[switch statement\|switch]]. The first version with support for the [[Action Message Format]] (AMF) and [[Real-Time Messaging Protocol]] (RTMP) allowed for on demand audio/video streaming.
	* '''Flash Player 7''': Additions to it include Cascading Style Sheets ([[CSS]]) styling for text and support for ActionScript 2.0, a programming language based on the ECMAScript 4 [[Netscape]] Proposal<ref>{{cite web\|url=http://www.mozilla.org/js/language/es4.html \|archive-url=https://web.archive.org/web/20070711065258/http://www.mozilla.org/js/language/es4.html \|url-status=dead \|archive-date=July 11, 2007 \|title=ECMAScript 4 Netscape Proposal \|publisher=[[Netscape]] \|editor=Waldemar Horwat \|date=June 30, 2003 \|access-date=April 11, 2019}}</ref> with [[Class (~~computer~~ programming)\|class]]-based [[Inheritance (object-oriented programming)\|inheritance]]. However, ActionScript 2.0 can [[cross compile]] to ActionScript 1.0 [[bytecode]], so that it can run in Flash Player 6.		* '''Flash Player 7''': Additions to it include Cascading Style Sheets ([[CSS]]) styling for text and support for ActionScript 2.0, a programming language based on the ECMAScript 4 [[Netscape]] Proposal<ref>{{cite web\|url=http://www.mozilla.org/js/language/es4.html \|archive-url=https://web.archive.org/web/20070711065258/http://www.mozilla.org/js/language/es4.html \|url-status=dead \|archive-date=July 11, 2007 \|title=ECMAScript 4 Netscape Proposal \|publisher=[[Netscape]] \|editor=Waldemar Horwat \|date=June 30, 2003 \|access-date=April 11, 2019}}</ref> with [[Class (programming)\|class]]-based [[Inheritance (object-oriented programming)\|inheritance]]. However, ActionScript 2.0 can [[cross compile]] to ActionScript 1.0 [[bytecode]], so that it can run in Flash Player 6.
	* '''Flash Player 8''' further extended ActionScript 1/ActionScript 2 by adding new class libraries with APIs for controlling bitmap data at run-time, file uploads, and live filters for blur and [[drop shadow]].		* '''Flash Player 8''' further extended ActionScript 1/ActionScript 2 by adding new class libraries with APIs for controlling bitmap data at run-time, file uploads, and live filters for blur and [[drop shadow]].
	* '''Flash Player 9 (initially called 8.5)''' added ActionScript 3.0 with the advent of a new virtual machine, called [[ActionScript Virtual Machine 2]] (AVM2), which coexists with the previous AVM1 needed to support legacy content. Performance increases were a major objective for this release of the player, including a new [[Just-in-time compilation\|just-in-time]] (JIT) compiler. Support for binary sockets, [[ECMAScript for XML]] (E4X) XML parsing, full-screen mode, and regular expressions were added. This is the first release of the player to be titled Adobe Flash Player.<ref>{{cite web\|url=https://www.adobe.com/products/flashplayer \|title=Flash Player \| Adobe Flash Player 11 \| Overview \|publisher=Adobe.com \|date=April 9, 2013 \|access-date=April 22, 2013}}</ref>		* '''Flash Player 9 (initially called 8.5)''' added ActionScript 3.0 with the advent of a new virtual machine, called [[ActionScript Virtual Machine 2]] (AVM2), which coexists with the previous AVM1 needed to support legacy content. Performance increases were a major objective for this release of the player, including a new [[Just-in-time compilation\|just-in-time]] (JIT) compiler. Support for binary sockets, [[ECMAScript for XML]] (E4X) XML parsing, full-screen mode, and regular expressions were added. This is the first release of the player to be titled Adobe Flash Player.<ref>{{cite web\|url=https://www.adobe.com/products/flashplayer \|title=Flash Player \| Adobe Flash Player 11 \| Overview \|publisher=Adobe.com \|date=April 9, 2013 \|access-date=April 22, 2013}}</ref>
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	When writing external ActionScript 2.0 class files the above example could be written in a file named {{Mono\|Greeter.as}} as following.		When writing external ActionScript 2.0 class files the above example could be written in a file named {{Mono\|Greeter.as}} as following.
	<syntaxhighlight lang="actionscript">		<syntaxhighlight lang="actionscript">
	~~class com~~.example.Greeter extends MovieClip		package org.wikipedia.example {
	{		import flash.display.MovieClip;
	public function Greeter()
	{		class Greeter extends MovieClip {
	var txtHello: TextField = this.createTextField("txtHello", 0, 0, 0, 100, 100);		public function Greeter() {
	txtHello.text = "Hello, world";		var txtHello: TextField = this.createTextField("txtHello", 0, 0, 0, 100, 100);
			txtHello.text = "Hello, world";
			}
	}		}
	}		}
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	Presume the following file to be {{Mono\|Greeter.as}}:		Presume the following file to be {{Mono\|Greeter.as}}:
	<syntaxhighlight lang="actionscript3">		<syntaxhighlight lang="actionscript3">
	package ~~com~~.example		package org.wikipedia.example {
	{		import flash.display.Sprite;
	import flash.text.TextField;		import flash.text.TextField;
	~~import flash.display.Sprite;~~

	public class Greeter extends Sprite		public class Greeter extends Sprite {
	{		public function Greeter() {
	public function Greeter()
	{
	var txtHello: TextField = new TextField();		var txtHello: TextField = new TextField();
	txtHello.text = "Hello World";		txtHello.text = "Hello World";

imported>InternetArchiveBot: Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.5) (Eastmain - 23915

2025-06-06T21:51:50Z

Rescuing 1 sources and tagging 0 as dead.) #IABot (v2.0.9.5) (Eastmain - 23915

← Previous revision		Revision as of 21:51, 6 June 2025
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	\| paradigm = [[Multi-paradigm]]: [[Object-oriented programming\|object-oriented]] ([[Prototype-based programming\|prototype-based]]), [[Functional programming\|functional]], [[Imperative programming\|imperative]], [[Scripting language\|scripting]]		\| paradigm = [[Multi-paradigm]]: [[Object-oriented programming\|object-oriented]] ([[Prototype-based programming\|prototype-based]]), [[Functional programming\|functional]], [[Imperative programming\|imperative]], [[Scripting language\|scripting]]
	\| family = [[ECMAScript]]		\| family = [[ECMAScript]]
			\| designer = [[Gary Grossman]]
			\| developer = [[Macromedia]] (merged into [[Adobe Inc.\|Adobe Systems]], 2005)
	\| released = {{Start date and age\|1998}}		\| released = {{Start date and age\|1998}}
	~~\| designer = [[Gary Grossman]]~~
	~~\| developer = [[Macromedia]] (now merged into [[Adobe Inc.\|Adobe Systems]])~~
	\| latest release version = 3.0		\| latest release version = 3.0
	\| latest release date = {{Start date and age\|2006\|06\|27}}		\| latest release date = {{Start date and age\|2006\|06\|27}}
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	}}		}}
	{{Infobox file format		{{Infobox file format
	\| name = ActionScript		\| name = ActionScript
	\| extension = .as		\| extension = .as
	\| mime = application/ecmascript<ref>{{IETF RFC\|4329}} (limit compatible with ~~EcmaScript~~)</ref>		\| mime = application/ecmascript<ref>{{IETF RFC\|4329}} (limit compatible with ECMAScript)</ref>
	}}		}}

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	==Code protection==		==Code protection==
	Like most [[bytecode]] file formats, Flash [[SWF]] files can be [[decompilation\|decompiled]] into their source code and assets (similarly to how [[.NET Framework\|Microsoft .NET]] files can be decompiled). Some decompilers are capable of nearly full reconstruction of the original source file, approximate to the actual code that was used during creation (although results vary on a case-by-case basis).<ref>{{cite web \|url=http://www.flashmagazine.com/reviews/detail/review_trillix_flash_decompiler_3/ \|title=Third party review of another decompiler \|publisher=Flashmagazine.com \|date=October 21, 2007 \|access-date=April 22, 2013 \|archive-url=https://web.archive.org/web/20170620134350/http://www.flashmagazine.com/reviews/detail/review_trillix_flash_decompiler_3/ \|archive-date=June 20, 2017 \|url-status=dead}}</ref><ref>{{cite web\|url=http://www.topshareware.com/reviews/10386-1/flash-decompiler.htm \|title=Customer comments on one Flash decompiler \|publisher=Topshareware.com \|access-date=April 22, 2013}}</ref><ref>[http://www.macupdate.com/reviews.php?id=11541 Customer comments on another Flash product] {{webarchive \|url=https://web.archive.org/web/20060818085731/http://www.macupdate.com/reviews.php?id=11541 \|date=August 18, 2006}}</ref>		Like most [[bytecode]] file formats, Flash [[SWF]] files can be [[decompilation\|decompiled]] into their source code and assets (similarly to how [[.NET Framework\|Microsoft .NET]] files can be decompiled). Some decompilers are capable of nearly full reconstruction of the original source file, approximate to the actual code that was used during creation (although results vary on a case-by-case basis).<ref>{{cite web \|url=http://www.flashmagazine.com/reviews/detail/review_trillix_flash_decompiler_3/ \|title=Third party review of another decompiler \|publisher=Flashmagazine.com \|date=October 21, 2007 \|access-date=April 22, 2013 \|archive-url=https://web.archive.org/web/20170620134350/http://www.flashmagazine.com/reviews/detail/review_trillix_flash_decompiler_3/ \|archive-date=June 20, 2017 \|url-status=dead}}</ref><ref>{{cite web \|url=http://www.topshareware.com/reviews/10386-1/flash-decompiler.htm \|title=Customer comments on one Flash decompiler \|publisher=Topshareware.com \|access-date=April 22, 2013 \|archive-date=November 8, 2016 \|archive-url=https://web.archive.org/web/20161108235827/http://www.topshareware.com/reviews/10386-1/flash-decompiler.htm \|url-status=dead }}</ref><ref>[http://www.macupdate.com/reviews.php?id=11541 Customer comments on another Flash product] {{webarchive \|url=https://web.archive.org/web/20060818085731/http://www.macupdate.com/reviews.php?id=11541 \|date=August 18, 2006}}</ref>

	In opposition to the decompilers, ActionScript [[obfuscated code\|obfuscators]] have been introduced, which transform code into a form that breaks decompiler output while preserving the functionality and structure of the program. Higher-quality obfuscators implement lexical transformations such as identifier renaming, control flow transformation, and data abstraction transformation which collectively make it harder for decompilers to generate output likely to be useful to a human. Less robust obfuscators insert traps for decompilers. Such obfuscators either cause the decompiler software to crash unexpectedly or to generate unintelligible source code.{{Citation needed\|date=March 2021}}		In opposition to the decompilers, ActionScript [[obfuscated code\|obfuscators]] have been introduced, which transform code into a form that breaks decompiler output while preserving the functionality and structure of the program. Higher-quality obfuscators implement lexical transformations such as identifier renaming, control flow transformation, and data abstraction transformation which collectively make it harder for decompilers to generate output likely to be useful to a human. Less robust obfuscators insert traps for decompilers. Such obfuscators either cause the decompiler software to crash unexpectedly or to generate unintelligible source code.{{Citation needed\|date=March 2021}}

imported>Fedorovich Alexandr: /* ActionScript 3.0 */

2025-05-21T10:36:23Z

ActionScript 3.0

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