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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.Lower elevator tab Home Page-秦旷颓然。葫芦死大悲，抄家大惊，葫芦生大喜，如今复又大悲，郑老太太终于爬不起来了，昏迷不醒，不时说胡话。《毒枭》在经过三季于哥伦比亚的反毒战争后将告一段落。Netflix将原来的第四季独立出来作为衍生剧《毒枭：墨西哥篇》（Narcos: Mexico）。印度电视剧史上里程碑式的作品。大史诗《摩诃婆罗多》的影像化。节目挑选20部来自第13届鲜浪潮国际短片节的作品播出。