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My presentation from the Flash CS4 launch in India.
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AS2 vs AS3
Yash ModyCTO | Tekno Pointyash@teknopoint.us
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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
ActionScript 2.0 ActionScript 3.0
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alpha
ActionScript 2.0 ActionScript 3.0
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
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