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后山谷里，姹紫嫣红开满了野花，又有几亩地，种着各色蔬菜，好些都是春夏才有的。No.8 DilrabaDetermine whether to bind or delete events-w1564该剧讲述了1946年我国第一代公安战士在哈尔滨与敌对势力斗智斗勇的英雄故事。身份成谜的冷艳女特工宋红菱，为了任务与上级指派的搭档杨景修假扮夫妻，在一次执行任务的过程中与已经成为人民警察的昔日恋人程樯重逢，自此展 ...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.