Intelligentedu Best New Free Computer IT Training Tutorial Resources

AJAX, short for Asynchronous Java Script and XML, is a web development framework that is being used to achieve interactivity between users and servers through multiple client sided server connections. In this new web development model, the single-page web interface is composed of individual components which can be updated independently of each other. By using AJAX, developers can create web applications in browsers, thus leading to the decline of traditional based desktop applications. AJAX is leading Web programming towards Web 2.0, the next generation of using and developing for the Web. JavaScript is at the heart of AJAX, and writing an AJAX application requires good experience with JavaScript.

Here are 4 AJAX Training and Implementation Documents that will give you a greater understanding of AJAX and demonstrate how to implement applications using it and how to migrate your web applications to this technology.


AJAX - Asynchronous JavaScript and XML (14 pages)

The training document evaluates and discusses AJAX, and it's technical components and concepts are outlined. It also goes over Web 2.0 and the history of Web Services, gives examples and builds your understanding of the principles of the asynchronous Java Script and XML technology by reviewing the concepts behind some AJAX coding examples. The first chapter provdes an introduction to Web programming, then chapter 2 gives a description of the details of AJAX. Chapter 3 shows more implementation details and technical aspects, while chapter 4 describes implementation source code, and chapter 5 gives a review of the material covered and offers a look at the future of AJAX. Excellent references are linked to at the end of this document.

1 Introduction
    1.1 History of Web Services
    1.2 Web 2.0
2 AJAX 
    2.1 Concepts of Ajax 
    2.2 Benefits 
    2.3 Server/Browser Model.
    2.4 Existing Ajax Tools 
3 Technical Aspects 
    3.1 Technical Overview
    3.2 XmlhttpRequest
    3.3 Data transformation and Exchange
    3.4 Representation and Manipulation of Data
4 Practical Part 
    4.1 Frameworks for AJAX
    4.2 Sourcecode Example
    4.3 Alternatives 
5 Review and Summary


Migrating Multi-page Web Applications to Single-page AJAX Interfaces

Migrating web-based systems and applications to single-page AJAX applications is a new challenge many developers and IT departments are facing today. The first step to is know and understand the navigation and user interface (UI) structure of the source application. This document explains a technique using schema-based clustering that documents the navigational model of web applicaitons, and then lists its UI components that need to be migrated to a single-page AJAX interface. Also, a case study is given to help evaluate this web migration tool. pdf document (14 pages)


A Code Migration Framework for AJAX Applications

Migrating applications to AJAX requires a detailed level of knowledge of JavaScript and this sometimes makes it difficult to write AJAX applications. This paper first discusses the benefits of AJAX and compares it to other development frameworks, and specifically Java applets. A code migration framework is then described that permits the developer to write AJAX applications in Java. Using this framework, the Java application is automatically translated to JavaScript and then migrated to the browser for execution. The programmer does not need to know or code using any JavaScript. Also, programming in Java allows the use of debugging tools not available for JavaScript. A prototype is freely available under an Open Source license. Some good references are listed at the end. (pdf format,14 pages)


Logging Usage of AJAX Applications with the "UsaProxy" HTTP Proxy

Learn how to use the UsaProxy HTTP proxy to obtain information about user activity from web-based AJAX applications. UsaProxy is a special-purpose HTTP proxy which modifies HTML pages before forwarding them to the client browser. It adds JavaScript code which collects data about mouse movement, clicks, key presses and other types of interaction without affecting the user’s application experience. Gmail is demonstrated as an example AJAX application, and the authors explain how to set up a test using UsaProxy and how to understand the log data written by it. (pdf format, 4 pages)

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