PureMVC will be included in next episode.

PureMVC is a framework for creating applications based upon the well-established model–view–controller (MVC) design pattern. The free, open source framework was originally implemented in the ActionScript 3 language for use with Adobe Flex, Flash and AIR, and it has since been ported to nearly all the major web development platforms.

Advantages and disadvantages of PureMVC:

• Advantages

• Use intermediaries, agents and commands to realize decoupling, which reduces the coupling among model, view and controller and improves the reuse of some codes

• The view interface can be reused

• Model data can be reused

• Disadvantages

• Code redundancy is large. For simple functions, you have to create view, mediator, command, facade, proxy and model scripts

• The operation process is a cumbersome process, and the code in mediator will appear complex and difficult to understand, unless you are familiar with the implementation principle of PureMVC

• PureMVC features

• The notice shall be delivered through the operation of packing and unpacking
• The command / notification is implemented in the observer mode. The command / notification uses the reflection acquisition method in the observer and is executed
• No service (this module for network communication can be added according to the structure of MVC)
• Data is transmitted through notification. Sendnotification has only one object type parameter. It will feel that the data transmission is limited. You can combine the data into a type / structure for transmission, or expand another parameter for notification.