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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.又摸摸坐在脚边的两个黑瘦小女娃道：老二家的几个娃就不成了，到底没吃过苦的，就扛不住。迁都此处可谓是最好的选择，只是没想到尹旭早有了这样的打算，并且经营了这么长时间，现在突然提出来，多少让人有些惊诧。又说你们家有好大的山林，池塘果园各样都齐全，只有比我家更好的。Step 1 DecompressOn the afternoon of 26th, Huawei released its first 5G mobile phone in the Chinese market!