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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.清末周村，德和永货栈杨掌柜早年丧妻，膝下只有一子瑞清，十六岁便中举人，却因不满满清政府，拒绝再参加科考，偷偷与老鸨之女桂花相恋，并接受西洋传教士克利尔的科学和民主启蒙。周村官宦王家打着“奉旨专营”的旗号对丝绸行业施行垄断。瑞清趁父外出，与经营蚕茧的商人老刘破规收茧。王家之子新成为了报复杨瑞清，纵火烧了杨家机房，使杨家彻底破产，杨掌柜承受不住打击，病发去世。瑞清远走上海，偶然认识了夏先生，并做了克利尔的弟弟小克利尔的助手，展露出非凡的商业才能，夏先生的女儿稚琴也对瑞清产生了爱慕之心。瑞清寄信和钱回周村给伙计四胜，要他转给桂花。此时，桂花却已在母亲的逼迫下嫁给了爆仗刘。瑞清闻讯伤心欲绝十年之后，周村开埠。瑞清与稚琴也已经结为夫妻。瑞清准备回周村开办工厂，大干一番。瑞清回周村办厂的事情遭到了王新成与其表哥茶商崔广兴的联合抵制。瑞清频出奇招，让王新成高价买了无用的土地，并从南京请来金陵十二钗，引进了国外的土耳其浴，顶了王家青楼和澡堂子两档赚钱的生意。为了报复杨瑞清，王新成与瑞清助手杨立俊在赌场上指名手配の男 加勢大周 中島唱子二来，能从状元郎手上将他不舍的女子给赢来，这赢得的脸面和名气。For example, in the back-end system, There are tabular data, Each piece of data is preceded by a check box button, When you click the check box button, After obtaining the id, it needs to be passed to the server to send an ajax request. The server needs to record this data, To request, if we send an http request to the server every time we click, For the server, the pressure is relatively high and the network requests are frequent. However, if the real-time data of the system is not very high now, we can collect all ID for a period of time (e.g. 2-3 seconds) through a proxy function and send AJAX requests to the server at one time. Relatively speaking, the network requests are reduced and the server pressure is reduced.可是听他们掰来扯去的，越说越听不懂，也就没劲儿了，只盼着夫子赶紧下学——往常这时候都已经下学了哩。杀敌为零，损兵一千。