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May 25, 2021 14:00 Flex
Flex is a powerful open source application framework that allows traditional applications to be built for browsers, mobile devices, and desktops using the same programming models, tools, and code base.
Flex provides FLEX SDKs and other utilities consisting of Flex Class Library (ActionScript Class), Flex compiler, debugger, MXML, and ActionScript programming languages to build expressive and interactive Internet-rich applications (RIA)
Flex is responsible for the user interface (UI) or client functionality of Web applications. Server-side functionality depends on server-side components written in traditional scripting languages (Java/PHP, etc.).
Flex applications act as SWF files as well as HTML wrappers, CSS files and any server-side script files (i.e. Java, . C FM，. P HP, etc.) deployed to the server. Like a traditional Web application
These resources are delivered from the server to the client browser using the usual HTTP request/response method, in which Flash Player runs the application.
Flash Player-based Flex applications can access device features such as GPS, cameras, local databases, and graphical accelerometers.
Flex apps can run on Android, BlackBerry Tablet OS, iOS devices.
Flex applications can run on browsers and desktops.
Flex applications are platform-independent. /b10> The UI can be local to the platform or the same on each platform.
Flex applications can use industry standards (e.g. REST, SOAP, JSON, JMS and AMF) with all major server-side technologies (e.g. Java, Spring, Hibernate, PHP, Ruby, .NET, Adobe ColdFusion and SAP)
Flex application development ensures a rich user experience by visually interacting with applications to present information in a more visually rich interface.
A Flex application is a single-page application where states can be transitioned from one state to another without having to get a new page from the server or refresh the browser.
The Flex application significantly reduces the load on the server because it only needs to return the application once, rather than a new page whenever the user changes the view.
The Flex application is a single-threaded application, but Flex provides an asynchronous programming model to mitigate this problem.
Flex is based on actionscript and XML. /b10> Learning these two is what Flex must do.