About ActionScript 3.0

What is ActionScript?

ActionScript is a language program for the Flash Player. Have the ability as animation, data handling, and more support in the flash-based application. ActionScript executed by ActionScript Virtual Machine (AVM), which is part of Flash Player. In the ActionScript code will be compile into bytecode by the compiler such as the Flex SDK and Flex Data Services. This bytecode will be placed on the SWF file, and will be executed by Flash Player. Other features of ActionScript 3.0 is a robust (fast) and is the object oriented programming.

Benefits from ActionScript 3.0
ActionScript 3.0 has the ability to recognize the previous version of the script. Designed to facilitate large-scale application development and complex use of a large set of data with object-oriented approach, and are reusable (code that can be used again). ActionScript 3.0 will be executed over ten times faster than the previous version of ActionScript.
Compatibility With Previous Versions
All versions of ActionScript can be identified using the Flash Player 9 and the latest. Here are some statements regarding the compatibility of ActionScript:
1. A SWF file can not combine ActionScript 1.0 or ActionScript 2.0 to 3.0.
2. ActionScript 3.0 can be read (load) SWF files written using ActionScript 1.0 or 2.0, but can not access the variables and functions of the SWF file.
3. SWF files written using ActionScript 1.0 / 2.0 can not read (load) SWF files written using ActionScript 3.0. This means that the SWF file generated by Flash 8 or Flex Builder 1.5 can not read SWF files written using ActionScript 3.0.
4. In general, SWF files written using version 1.0 and 2.0 must be changed if used together with SWF files written with ActionScript 3.0.
The diagram below summarizes some of the limitations of previous versions of Flash Player.