在线购物是当前电子商务网站运营的主要模式之一，其动作方式主要为：当用户访问到电子商务网站时，首先能够查询、浏览该网站提供所有商品信息；同时，用户在查询浏览商品时，能够随时选择自己感兴趣的商品放入自己的购物车中，购物车是虚拟的，由网站管理系统提供，其中的预购商品数量、价格等信息由网站数据库存储和管理；接着，当用户 选货完毕后，可对购物车中选购物品进行修改，比如对商品数量的添加或是减少等-Online shopping is currently e-commerce site operators, one of the main mode, mainly for its action: when a user access to e-commerce site, first of all be able to query, browse the site to provide information on all goods　At the same time, users browse products in the query, be able to choose their own interest at any time of the commodity Add own shopping cart, shopping cart is a virtual, Web site management system by which the number of futures commodity prices and other information from the web site database storage and management　Then, when the user selected goods After shopping cart can be modified to purchase items, such as the number of commodities, such as adding or reducing