当用户点击了一个商品，面板内容就会根据 panelGrid更新，与 product.jsp文件中定义的相似（href属性）。

When the user clicks on a product, the content of the panel is updated with a panelGrid similar to that defined in the product.jsp file (the href attribute).

youdao

购物车仅当用户点击按钮时才会更新，而用户不得不转入其他页面以浏览产品的详细描述。

The cart is updated only when the user clicks a button, and the user has to navigate to another page to see a detailed description of an item.

youdao

购物车仅当用户点击按钮时才会更新，而用户不得不转入其他页面以浏览产品的详细描述。

The cart is updated only when the user clicks a button, and the user has to navigate to another page to see a detailed description of an item.

youdao