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Structural patterns, as the name implies, discuss the structure of classes and objects and are mainly used to deal with the combination of classes or objects. It includes two types, one is class structure pattern, which refers to the combination of interfaces or implementations by inheritance mechanism. The second is the object structure mode, which refers to the realization of new functions by combining objects. It includes adapter mode, bridge mode, decorator mode, combination mode, appearance mode, element mode and agent mode.So many concepts, don't have a headache! Let's look at the relationship between the three methods with pseudo code!　　俊锡因母亲的想念，在回家看望的途中出了车祸，从此丧失了记忆。俊锡的父亲对缨子慌称俊锡已决定回家继承家业并给了他们母女一大笔钱。缨子母女从此失去了俊锡的音讯。不堪打击的缨子一病不起。而同他们生活在一起的宋、金两人为了谋夺她的财产，在缨子死后把年仅四岁的慧英扔在了远去的火车上。本剧通过记叙一个名叫杜子腾的群众演员，由于身份卑微，前途黯然，相貌平平的他，屡次追求心爱的女生，每次都碰壁，一次偶然机会他遇到了一个叫做白晴的女孩，意外的救了她性命，杜子腾对白晴一见钟情，开始追求白晴，谁料白晴已经有男朋友，杜子腾甘愿做白晴备胎，一厢情愿去追求，感情让他失去理性，谁知白晴的男朋友其实是个花心男，白晴在这段感情中也充当着备胎的角色。杜子腾认定白晴，开始努力提升自我，去关心白晴，以真诚相待，通过努力，以自己平平的条件，从一个所谓的备胎，成功逆袭取得了美女白晴的芳心。两人最终也步...After making a non-empty judgment on the transferred parameters, the call transfer parameters are: event object, browser native event name, and event handling function (bind function) specifying the top-level event type.