Macromedia flex 2 Manuale

14

Creating Flex Components

A common coding practice is to divide an application into functional units, or modules, 
where each module performs a discrete task. Dividing your application into modules provides 
you with many benefits, including the following:

Ease of development

Different developers or development groups can develop and debug 

modules independently of each other. 

Reusability

You can reuse modules in different applications so that you do not have to 

duplicate your work.

Maintainability

By developing your application in discrete modules, you can isolate and 

debug errors faster than you could if you developed your application in a single file. 

In Flex, a module corresponds to a custom component, implemented either in MXML or in 
ActionScript. The following image shows an example of a Flex application divided into 
components:

Client

Web server

Compiler/Linker

Custom 

components

main.mxml

Use <mx:Script> 
to write, import, 
or include 
ActionScript