as2 vs as3

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Copyright 2008 Adobe Systems Incorporated. All rights reserved. Adobe Con!dential.

AS2 vs AS3

Yash ModyCTO | Tekno [email protected]

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Overview

ActionScript 3.0 Overview

Top Misperceptions

Top Bene!ts

Migration Examples

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Top 5 Misperceptionsabout ActionScript 3.0

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Misperception #1

ActionScript 3.0 is difficult to learn

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Misperception #2ActionScript 3.0 is only for Class based

object-oriented programming

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Misperception #3Using ActionScript 3.0 reduces the

Flash Player base that you can target

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Misperception #4You can’t write code on the timeline

with ActionScript 3.0

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Misperception #5ActionScript 2.0 development is faster

that ActionScript 3.0 development

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Top 5 Benefits ofActionScript 3.0

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Benefit #1

Performance

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Benefit #2Ability to leverage new Flash Player

APIs and technologies

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Benefit #3

Leverage Community Libraries and APIs

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Benefit #4

Easier and faster to debug code

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Benefit #5Future proofed, multi-platform

development

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•Use of underscore•Void / void•Alpha value range• Event Model•Code and events on Symbols

ActionScript 3.0Gotchas

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underscores

ActionScript 2.0 ActionScript 3.0

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void


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alpha


0-100 0.0-1.0

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Events

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no code on symbols

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Migration Examples

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Create a VariableCreate a FunctionCreate an if statement

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Loop Through anArray

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_root

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Handling Button Clicks

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Opening a URL

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Dynamically Attach aMovieClip

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Load an Image

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Play a Sound

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Load and Parse XML…the E4X way

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Some more stuff Runtime Exceptions - increase in conditions Sealed Classes - !xed set of values - better

maintainability

Method closures - Themx.utils.Delegate not required

Regular expressions - nativesupport for better string manipulation

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Get onto AS3 today

as2 vs as3

Technology