Web applications have traditionally been a set of HTML pages that must be reloaded to change any portion of the content. Some of questions in traditional web interaction model which required answers from usability engineering point of view where Once an interface is loaded, why should the user interaction come to a halt every time the application needs something from the server?

Why should the user see the application go to the server at all?

Is it possible to have web application interaction as responsive as desktop application?

Technologies such as JavaScript programming language and cascading style sheets (CSS) have matured to the point where they can be used effectively answer these questions and create very dynamic web applications that will work on all of the major browsers and will have experience similar to desktop application. Web applications have traditionally been a set of HTML pages that must be reloaded to change any portion of the content. Advanced JavaScript and XML (AJAX) helps build a new breed of dynamic web applications on Web 2.0.

The following technologies are typically included in AJAX:

• Cascading Style Sheets (CSS), a markup language for defining the presentation style of a page, such as fonts and colors.
• JavaScript, a scripting language. One element of JavaScript technology that is key to AJAX is XML Http Request, an object that is used to exchange data between the web client and web server.
• Document Object Model (DOM), which provides a logical view of a web page as a tree structure.
• XML, the format for sending data from the web server to the client. However, you can use other formats, such as HTML, JavaScript Object Notation (JSON), or plain text.

Orisys Infotech delivers on advanced AJAX programming solutions from our offshore software development center in Bhubaneswar, India. We focus on following AJAX applications areas:

Form data such as user IDs, serial numbers, postal codes, or even special coupon codes that require server-side validation can be validated in a form before the user submits a form.

A specific portion of form data such as an email address, name, or city name may be auto completed as the user types.

Based on a client event, an HTML page can fetch more data in the background, allowing the browser to load pages more quickly. Sophisticated user interface controls and effects: Controls such as trees, menus, data tables, rich text editors, calendars, and progress bars allow for better user interaction and interaction with HTML pages, generally without requiring the user to reload the page.

HTML pages may poll data from a server for up-to-date data such as scores, stock quotes, weather, or application-specific data. A client may use AJAX techniques to get a set of current data without reloading a full page. Polling is not the most effecient means of ensuring that data on a page is the most current. Emerging techniques such as Comet are being developed to provide true server-side push over HTTP by keeping a persistent connection between the client and server.

An HTML page can submit form data as needed without requiring a full page refresh.

An HTML page can obtain data using a server-side proxy or by including an external script to mix external data with your application's or your service's data. For example, you can mix content or data from a third-party application such as Google Maps with your own application.

AJAX techniques can be made to create single-page applications that look and feel much like a desktop application.

Orisys Infotech has the accumulated experience and the technical know how to assist you in web designing, developing and deploying open standard infrastructure solutions using AJAX or AJAX libraries in a timely manner to meet and exceed customer expectations.