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The combination mode is also called part-to-whole mode. The combination mode combines objects into a tree structure, which is used to represent the relationship between the whole and the part. The combination mode enables clients to treat individual objects and combined objects equally. For example, in. NET, simple controls such as WinForm controls, TextBox and Label inherit from the Control class, while composite controls such as GroupBox also inherit from the Control class. The specific structure diagram of the combination mode is shown below.张云峰来到城里打工，陪伴自己心爱的女友谢华丽上大学。却碰上女友同学徐丽，并在其危难时刻施救。之后徐丽便对张云峰紧追不舍。与此同时患有心脏病的女友进了医院，为凑齐手术费，张云峰准备参加格斗赛，训练中被女友闺蜜柠檬发现，通过柠檬介绍，张云峰在训练馆与寒天、阿浪学习专业拳击，并通过了初赛和复赛。为取得决赛胜利开始了魔鬼般的训练，并意外获得扫地大妈的指点。张云峰带着决心和勇气踏上擂台，挽救自己心爱的女友谢华丽。Today's problem mainly involves several: objects, triggering events, capturing events, executing processing, and blistering. This is actually the whole process of JS execution. The process of bubbling is very interesting. In fact, it is like a glass of water, but this glass of water is hierarchical, and the bottom is the object of the current trigger event. Then the higher the range, the larger the range. The top layer must be window and the penultimate layer must be document. In the process of floating up, the bubble will judge whether the layer currently reached has a binding event handling method. If there is any, the corresponding processing is executed. If not, it will continue to blister. Until you reach the top window window layer. We can do corresponding processing at any layer to prevent the event from continuing to bubble. The method is the method that calls the event object to prevent blistering. Event.stopPropagation (); The following is a process method written to verify JS event blistering.黄豆已经坐在她卧房外间喝茶等候了。就算能见，也是五十六亿年后的事情。