About ActionScript

ActionScript is the programming language for Macromedia Flash Player. ActionScript includes built-in objects and functions, and lets you create your own objects and functions.

Note: The ActionScript programming language in Flash MX 2004 and Flex follows the ECMA 4 standard proposed by the Mozilla project.

ActionScript is similar to the core JavaScript programming language. You don't need to know JavaScript to use ActionScript; however, if you know JavaScript, ActionScript will appear familiar to you. The following are some of the many resources available that provide more information about general programming concepts and the JavaScript language:

The European Computers Manufacturers Association (ECMA) document ECMA-262 is derived from JavaScript and serves as the international standard for the JavaScript language.
ActionScript is based on the ECMA-262 specification, which is available from www.ecma-international.org. ECMA-262 is also known as ECMAScript. ActionScript is primarily based on Edition 3 of this standard, which is also referred to commonly as ECMA 3 (shorthand for ECMA-262 Edition 3).
Netscape DevEdge Online has a JavaScript Developer Central site (http://developer.netscape.com/tech/javascript/index.html) that contains documentation and articles about ActionScript.
Core JavaScript Guide.

For more information about using ActionScript in Flex, see Flex ActionScript Language Reference, which is included in the Flex documentation set.

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