This paper presents Ajax design scheme and the key code. It achieves the user browsing a group of pictures without page refreshes and can always see any picture in a group. When the administrator registeres users, management page in the background can dynamic display the current name whether registered without a page refresh. This paper also analyzes the problems of Ajax in the process of website development.%详细给出了利用Ajax设计的方案和关键代码,实现用户在浏览一组图片时页面不刷新,能随时查看组中任意图片；实现管理员在注册一般用户时不用刷新页面,可以在后台管理页面动态地显示出来当前用户名是否以前曾被注册过.本文还分析了Ajax在网站开发过程中存在的不足.
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