Analysis Of The New Web Model System Development Technology Ajax

This paper introduces a new Web application development technology Ajax (Asynchronous JavaScript and XML) . This technology enables users to achieve asynchronous communication with the server, builds up more dynamic and more sensitive response of the Web applications. Early in the process of the development of Web technology is used the synchronous interactive, there is a huge gap in the Web application provided to the user experience and the desktop applications from the experience obtained in response speed, ease of use. In order to improve Web application to the user experience, the paper brings out Ajax concept.In the first chapter the paper outlines the research background, situation of the Ajax technology, in order to give the readers a preliminary understanding of this technology. In the second chapter, first introduces the dynamic Web technology, Web 2.0 knowledge and its background, and the applications of Web2.0, then the prospect of its future. Following the the definition and the principle of Ajax technology, then the auther compared Ajax application model with the traditional Web application model. Through the working principle of Ajax, relative technologies and the development of the environment, it states that Ajax in Web applications has unique advantages, and it will become the mainstream application of the Web development technology. In the third chapter, on the basis of the dissertate of Ajax technology, and its major technology, then it does a detailed analysis on its key technology XMLHttpRequest. In Chapter IV, through an example it shows the advantages of Ajax technology. Finally this paper discusses the advantages of Ajax technology and the existing problems, then outlines it security implications on Web application, as well as we should pay attention to the negative impact of the problems. In the end comes to its prospected.Through the research, the traditional Web application request/response pattern has changed in the help of Ajax, developers can carry on asynchronous interaction freely with the server-side by this technology, it can make it possible for the client that need not be re-loading pages, users will not feel the website submitted or refreshed Without refreshed, the pages can still retrieval, inquirie and return to the visitor the relevant results. Developers are no longer send data in the database to the client when loading pages,which resulting in a bloated pages in order to achieve a dynamic effect. Ajax provides a very convenient way of dealing with clients, that the Web applications will put the richer interaction into effect.Recently, the major Internet sites such as Google, Yahoo, have adopted Ajax technology, Google recombines the Web technology which exists for many years, and designs a series of dazzle products. They all have adopted a comprehensive software technology-Ajax. Microsoft releases Live series of services used Ajax technology such as Live Mail, Virtual Earth business. Ajax makes B/S systems have C/S system in terms of speed. Using Ajax technology, the users' experience and usability of Web applications will have substantially elevated.