Basic MXML syntax

Most MXML tags correspond to ActionScript 2.0 classes or properties of classes. Flex parses MXML tags and compiles a SWF file that contains the corresponding ActionScript objects.

ActionScript 2.0 is a new version of ActionScript that uses syntax based on the ECMAScript Edition 4 proposal. ActionScript 2.0 includes the following features:

Formal class definition syntax
Formal packages structure
Typing of variables, parameters, and return values (compile-time only)
Implicit getters and setters that use the get and set keywords
Inheritance
Public and private members
Static members
Cast operator

For more information about ActionScript 2.0, see Using ActionScript.

Naming MXML files

MXML filenames must adhere to the following naming conventions:

Filenames must be valid ActionScript identifiers, which means they must start with a letter or underscore character (_), and they can only contain letters and numbers and underscore characters after that.
Filenames must not be the same as ActionScript class names, component id values, or the word application. Do not use filenames that match the names of MXML tags that are in the mx namespace.
Filenames must end with a lowercase .mxml file extension.

Version 1.5

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