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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.　　韩午阳和女友非常相爱、即将结婚，却没想到女友在他眼前因车祸爆炸身亡。　　五毒杂居，华洋相处，枪战械斗，奇情惊艳，新版《上海滩》风云再起……如何如何 -- 孙昊俣喜羊羊与灰太狼之兔年顶呱呱 电影海报