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The following procedure is to use the state mode to improve the light. When it comes to encapsulation, the behavior of the encapsulated object is generally preferred over the state of the object. But the opposite is true in state mode, The key to the state mode is to encapsulate each state of the thing into a separate class, and the behaviors related to this state are encapsulated inside this class, so when button is pressed, only the request needs to be delegated to the current state object in the context, and the state object will be responsible for rendering its own behaviors. At the same time, the state switching rules can be distributed in the state classes in advance, thus effectively eliminating a large number of conditional branch statements that originally existed.Fully Present General Secretary Xi Jinping's Important ThoughtsConsole.log ("I finally saw the pen test ~");故事发生在中国的一个普通大城市里的一个普通小家庭里。在这个家庭里，爸爸高大点和妈妈经过八年的精心培养，终于让我们的主角高小点成长为一个个子不高长得不帅学习不好不坏的平凡小孩子。围墙阻挡不了飞鸟，也阻挡不了为保护鸟类而战斗的人们。 科学与自然纪录片. 美国和墨西哥边界两侧的观鸟人分享他们对保护一些全球最美鸟类 ...State state = new State ();