Flex developers can use ActionScript to extend the functionality of their Adobe® Flex® applications. ActionScript provides flow control and object manipulation features that are not available in MXML. For a complete introduction to ActionScript and a reference for using the language, see Programming ActionScript 3.0 and ActionScript 3.0 Language Reference.

• Using ActionScript in Flex applications
• Working with Flex components
• Comparing, including, and importing ActionScript code
• Techniques for separating ActionScript from MXML
• Creating ActionScript components
• Performing object introspection