jQuery仿淘宝购物车自动结算金额效果，可根据商品单位和用户选购数量自动计算商品总值，适时计算，ajax 方式，用户修改产品时，最终的计算结果也会发生变化，适合用于在线购物一类的网站使用的网页特效。-jQuery imitation Taobao shopping cart automatically billed effect, can automatically calculate the total value of goods based on the number of users to buy goods units and timely calculation, ajax way, when users modify the product, the end result will change the calculation, suitable for online shopping netnew a class web site.