RESEACH ON ASP.NET AJAX FRAMEWORK AND ITS APPLICATION IN WEB DEVELOPMENT

Web page requests is the common way for applications to implement human-computer interaction, but full page refreshing of the page reduces the effects of users 'experience, increases the pressure of servers and slows down the speed of program response.Partial update pages with AJAX asynchronous transfer technology can increase the efficiency of program interactions and give user a friendly program interface.Microsoft's ASP.NET AJAX framework can greatly reduce the difficulty of programmers in developing AJAX applications.This paper introduces AJAX engine principle and ASP.NET AJAX framework firstly, and then describes ASP.NET AJAX configuration in the Web site, at the end we imported AJAX application in the design of online examination system in order to achieve asynchronous partial update , therefore a friendly user interactive interface is brought about.