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Step 2: Study User Needs一个项目牵扯出多年前的情感瓜葛，尘封3333天的绝美恋情在失忆后重逢。然而，参与这个项目的人都有着自己的小心思，看似偶然的失忆，却不只是单纯失忆那么简单。走上来捶了他一拳，微笑道：等你。《行医》讲述的是两名性格以及治疗方法都千差万别的医者的故事。一个中医和一个西医虽有竞争却注定走的是不同的道路。然而在他们之间激烈竞争开始的时候都被牵扯到了一个复杂的医疗案件之中。陈佩斯系列喜剧短剧Once run-out, the color is a soft brick-red.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.