The Design And Realization Of E-learing Platform Based-on Ajax Technology For Radio And TV University

This paper analyzes the current status of E-learning at home and abroad and the deficiency of e-learning of Radio and TV University. With modern distance education theory and the rapid development of Internet technology, the paper presents a set of the design and development of E-learning platform based-on Ajax technology. During several changes of the structure of web applications, Ajax (Asynchronous JavaScript and XML), as a new interactive model of web application is put forward. Its model provides a new kind web design pattern. This not only changes the traditional web application model, but it also opens up a new piece of web development field.The paper analyzes the technical construction and work principle of Ajax. With Ajax core technoque XMLHttpRequest, E-learning platform has realized Data alternative and partial revolution between the clientscript and the server, saved the network band-width, reduced server_end load, promoted user experience. It analyzes the main function and designing thought of E-learning platform in Radio and TV University. After using the technical construction of Ajax reasonably, we can combine closely the functions of course learning, teaching and management, video, on-line inquiry, ppt, knowledge navigation, teacher-student bbs, online test, statistics of students' learning, chatting room. It provides a satisfactory and personalized e-learning environment for the students. It introduces detailedly e-learning platform function and realization, such as, register and logging, vedio, slide broadcast and Search for on the net. It analyzes the Ajax safety on web applications and the problems of SQL pour and XML pour and XSS(Cross Site Script). It suggests the countermeasures.The development of this platform has some very important value for the same kind of e-learning system project construction.