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Secondly, deliberate practice requires a teacher who can assign targeted homework. Seeing here, everyone may be discouraged. Is it so easy to find a teacher? When I first saw it, I also wanted to give up deliberate practice, but when I saw the following chapters, I added that teachers are not necessary and can learn by themselves, provided that they are self-disciplined and persistent.Volume BasedToday'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.人与人的差距，还真是有的……吕文心突然感叹道。在新年的前一周，分别在世界各地的4对男女，有人准备展开异国婚姻，有人事业成功开心求婚，有人惨被渣男分手，但有人必需面对前夫的精神威胁，他们面临人生重要的改变时刻，这是他们如何克服对未来的恐惧的浪漫爱情故事。故事发生在北平，叙述的是从1937年到1948年北平解放前夕两代人的生活经历。1937年，卢沟桥的炮声点燃了中华民族的抗日烽火，刚刚走出大学校的青年路童谣、赵大勇、吴霞等为挽救民族危亡和北平人民一齐投入抗日救亡的工作中。北平沦陷后，几个热血青年选择了不同的生活道路，童辛去了抗日前线；童谣结婚过着小日子；吴霞随家人到大后方避难。故事讲述20世纪40年代，芭芭拉皇后号从巴西里约热内卢启航，船上乘客各个怀有目的，且有着不为人知的秘密。惊涛中暗藏未知与危险，无人能置身事外。