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What's the difference between actionscript 1.0 and actionscript 3.0?


Asked by Barbara Solomon on Nov 28, 2021 FAQ



ActionScript 3.0 was a fundamental restructuring of the language, so much so that it uses an entirely different virtual machine. Flash Player 9 contains two virtual machines, AVM1 for code written in ActionScript 1.0 and 2.0, and AVM2 for content written in ActionScript 3.0.
Consequently,
(Deprecated with Animate only) ActionScript 2.0 is simpler to learn than ActionScript 3.0. Although Flash Player runs compiled ActionScript 2.0 code slower than compiled ActionScript 3.0 code, ActionScript 2.0 is still useful for many kinds of projects.
One may also ask, ActionScript 3.0, however, was written from scratch (not built on prior versions of the language) and is handled entirely separately from previous versions of ActionScript anywhere the language is used.
Furthermore,
ActionScript 3.0 is fully compliant with the ECMAScript specification, offers better XML processing, an improved event model, and an improved architecture for working with onscreen elements. FLA files that use ActionScript 3.0 cannot include earlier versions of ActionScript.
Also Know,
(Deprecated with Animate) Flash Lite 1.x ActionScript is a subset of ActionScript 1.0 supported by Flash Lite 1.x on mobile phones and devices. Due to multiple versions of ActionScript (2.0 and 3.0), and multiple ways of incorporating it into your FLA files, there are different ways to learn ActionScript.