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PE Powder Hot Melt Adhesive:Preventing Bubble of React Synthetic Events and Native Events17. Chain of Responsibility)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.NBA (National Basketball Association) is the abbreviation of the American Men's Professional Basketball League. It was established in New York on June 6, 1946. It is a men's professional basketball league composed of 30 teams from North America. It brings together the world's top players and is one of the four major professional sports leagues in the United States.徐风眼睛瞬间睁得圆圆的，眨了两下眼，难掩笑意地问：难道你对我有过身体反应？季木霖冷淡地说：没有。