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Each object has its corresponding state, and each state corresponds to some corresponding behaviors. If an object has multiple states, there will be many behaviors. Then the judgment of these states and the behavior completed according to the states will lead to multiple conditional statements, and if a new state is added, the existing code needs to be changed. This kind of design obviously violates the principle of opening and closing, and the state mode is used to solve such problems.A Brief History of JavaScript Module Evolution2017-07-14 17:45:00陈婶正好从厨房出来听见了，皱眉对春花道：这日头还高着哩，哪里就要准备晚饭了？再说。Ignorance, impetuousness and conceit are probably the three most dangerous weaknesses in investment. However, what is more troublesome than these three items is the compound danger. For example, ignorance + conceit escalates to stupidity, ignorance + impetuousness becomes gamblers, and all three are typical "stupid gamblers". From this, we can see that continuous learning, guard against arrogance and rashness, self-knowledge and honesty are the necessary prerequisites to avoid becoming stupid gamblers.六个男孩子相遇在一栋房子，而他们都叫Tee。虽然他们的小名都一样，但是每个人却有着不同的性格爱好，在这栋房子里，他们要如何来忍受和接受每个人不同的性格和生活习惯呢？最后能否建立一个无可替代的友情呢？2020年9月18日起每周五晚上21:30分，跟着六个无可Tee代的小哥哥一起追剧。从构思到完成一幅油画的故事及其随后的销售。预言，预言对艺术家彼得·豪森在创作其不朽的世界末日绘画时的意图和技巧的坚定的检验；预言。