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Code as above; Write three functions of order500, order200 and orderNormal respectively, and process their own business logic in the functions respectively. If their own functions cannot be processed, they will return the string nextSuccessor to pass it back, then encapsulate the constructor Chain, pass an object fn into it, and have their own attribute Successor. There are two methods setNextSuccessor and passRequest on the prototype. The method setNextSuccessor specifies the order of nodes in the responsibility chain, and saves the corresponding method to the attribute this.Successor, chainOrder500. SetNextSuccessor (chainOrder200); ChainOrder200. SetNextSuccessor (chainOrderNormal); Specifies the order in the chain, so this.Successor references the order200 method and the orderNormal method, so if chainOrder500.passRequest (1, true, 500) is called for the first time, the order500 method is called, output directly, and chainOrder500.passRequ is called for the second time.王尚书、冯大人、张杨都陷入沉思。　　两个男人 为了爱情学习责任的过程silamanee是清莱王国代代相传，象征着清莱王权和国王对王后爱意的项链。它只属于清莱最高权利的女性统治者。那条项链虽然是绿色，但它实际上是被称为帝王宝石的蓝宝石的彩色变种。这种宝石中最好的就出产在清莱。不过，官员们一般都是便装常服前去。西安事变时，因率部抢占赤水河扭转事变局势的卫大河被贬回乡。抗战爆发，他重返前线，被派往由国共两党共同组建的中条山游击纵队，面对各种势力的相互倾轧，卫大河依然屡建奇功。在八路军团长高晓山、我党地下工作者付洋、姜雅真等人的帮助下，在与日军进行了骑马山、雪花山、永济血战及保卫根据地等一系列残酷斗争后，卫大河经历了从反共到亲共的人生蜕变，成长为一名优秀的共产党员。高晓山牺牲后，卫大河为保住游击纵队与国民党顽固派斗智斗勇，同时率陕军在中条山地区英勇抗战。他熟练地运用游击战术与日军周旋，迫使杵村久藏无法出兵，彻底粉碎了日军西进的战略企图。最终率残部于贵人峁牵制日军主力，宁死不降，血战到底，用生命谱写了一曲壮丽的英雄赞歌。请问楼上，你这书签卖吗？价格好商量。