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杨长帆骂道：这又不是坐飞机，哪来的气流？对，叫洋流才对。这部作品是一部不卖座的搞笑三人组·麦克白，与成为他们粉丝的家庭餐厅店员及其妹妹交织而成的青春群像剧。描写了20多岁的年轻人走上了与过去想象中不同的“大失败”人生道路，正是因为失败才遇到了未知的幸福。* Do not forget to secretly fish and write articles when doing homework late at night,夫子如今不做官了，在这养老，难得过几年清静日子，能少给他添些麻烦，尽量少些麻烦。First of all, let's introduce the business: in the purchase process, you can select the color of the mobile phone and enter the purchase quantity. At the same time, there are two display areas in the page, which respectively display the color and quantity that the user has just selected. There is also a button that dynamically displays the next operation. We need to query the inventory corresponding to the mobile phone of this color. If the inventory quantity is less than the purchase quantity this time, the button will be disabled and the copy with insufficient inventory will be displayed. Otherwise, the button will be highlighted and can be clicked and displayed if the shopping cart is displayed.