What is the difference between ActionScript 2.0 and ActionScript 3.0

actionscript-3 actionscript actionscript-2
Ramu picture Ramu · May 24, 2011 · Viewed 31.3k times · Source

What are the main differences between the versions?

Answer

Demian Brecht picture Demian Brecht · May 24, 2011

Besides the library changes, Actionscript 3 is compiled for and run on a completely different virtual machine (AVM2), which was re-written from the ground up. It reportedly executes compiled AS3 code up to 10 times faster than code script compiled for the AVM1 virtual machine.

You should check out this doc for a list of differences between AS2 and AS3 as they can't be explained any better on SO :)

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