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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.The lives of staff and residents at the fictional Kings Cross Hospital and Stanton House in Sydney in战地迷情故事围绕一名杀手在最后一次任务中，陷入了困境。Disney+宣布以8集首季直接预订《超越JustBeyond》,这部诗选恐怖喜剧改编自BOOM!的畅销视觉文学,原作作者是R.L.Stine（就是《鸡皮疙瘩Goosebumps》的作者）。改编版会由SethGrahame-Smith负责。