Ajax是未来Web开发的主流应用技术，本文实现基于Ajax的购物车模式，在向购物车添加项目时，页面无须刷新，购物车就会自动态更新。我们用jQuery框架实现Ajax引擎的开发，用JSON实现有效的Ajax数据交互。%Ajax are Mainstream Technologies of Web Program. This paper presents shopping cart models based on Ajax. When we Add items,shopping cart wil be dynamic updated, but the page is no need to refresh. We use jQuery to achieve Ajax engine development,and JSON to effective data interact.
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