March 2008 Issue of Java Jazz up magazine

1. Ajax-an Introduction
   Developing web application has now been a cup of coffee for developers having the knowledge of Ajax –a technology that was not so easy and hence not popular earlier- now one of the most frequently used technologies.
                    
2. Ajax Technology
   Asynchronous JavaScript and XML or Ajax for short is a type of asynchronous programming technical to develop Internet applications. Google made it popular by incorporating the technology in its search engine interface in the year 2005. ‘Google Suggest’ is the most popular Ajax application.
   
3. How Traditional web applications works
   This section explores the working of the browser in traditional web applications and then in the next section we will explore the working of Ajax based application.
                
4. How Ajax Works
   Ajax adds an extra layer of functionality in the communication model. Ajax engine acts as an intermediate between the user interaction to the browser and the server system.
                
5. Ajax-Technical Introduction
   We have already discussed that Ajax uses JavaScript to make a request from the server. For this we need an object of such class, which can provide this functionality.
                
6. Ajax Example
   This example is simple one to understand Ajax with JSP. The objective of the example is to display the current date of the server on the page on each key up event by the user without refreshing the current page. This example also shows the key value entered by the user in the input text field along with the current date and time.
                 
7. Ajax Frameworks Types
   There are two types of Ajax based frameworks used in the web programming nowadays: Server-side Framework and Client-side Framework. Server-side framework is installed inside the server while Client-side framework entertains the user’s browser to access the web. Similarly, the code executed on the Web server is considered as Serverside code while if executed on the user’s browser is known as Client-side Framework.
                     
8. Five cool Ajax widgets
   With the Web 2.0 wave came a whole new emphasis on the user experience. Part of that experience is the development novel ways to interact with and present information to users. Often, these new interfaces are called widgets and use Asynchronous JavaScript + XML (Ajax) to communicate with the server. Discover five widgets that you can use to enhance the interactivity of your site.
               
9. Five common Ajax patterns
   Asynchronous JavaScript + XML (Ajax) was certainly the technology buzzword of 2006 and looks to do just as well or better in 2007. But what does it really mean for your application? And which common architectural patterns are used widely in Ajax applications? Discover five common Ajax design patterns that you can use as a basis for your own work.