The Research And Improvement Of Ajax In Web Application

With the development of Internet and leap of the information,thus the way to make Web response more sensitive,data transmission more speedy and user experience more humanism becomes a hotspot nowadays.Ajax emerges as the times require for the sake of fulfiling users' this requirement,it solves the disadvantage of traditional Web such as low response speed,entire page refresh,incapable user alternation,simplex representation and serious burden of server-side,makes user relieve from the cycle of request/response,makes Web browser look like the immediate response to the same desktop application.This paper firstly analyses Ajax definition and related technology,deeply research the architecture and working theory of Ajax technologhy,fully demonstrates the advantages of Ajax applications,at the same time also points out some disadvantages of traditional Web applications.Secondly evaluates the Ajax technology into two objective, analyses the Ajax lifecyle,and summarizes the application category of Ajax.Then briefly analyses the advantages,parts and programming model of ASP.NET AJAX framework which is the choice of this paper.Then this paper gives the corresponding solutions to problems brought about by Ajax,subsequently analyses and studies Ajax in Web application,concretely researches Ajax application configuration,asynchrinous calls and local dynamic refresh and so on.For the system design,adopts the multilayer design thinking,uses server-side programming model and client-side programming model of ASP.NET AJAX,discusses and designs the core function of system,then gives a feasible solution to back button failure,security,invalid validator and so on.In the end,this paper briefly summarizes the work,and introduces the points to be impoved and developed about Ajax.