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费瑞·博曼，世界最大的迷幻药毒枭之一，原本在位于荷兰和比利时边境的郊区豪宅中享受着美满生活。但当两名卧底探员来到他的领地，试图渗透到他的生活并切断他的毒品网络的时候，事情发生了改变。我今天总算是长见识了。于是，老何夫妇、小镇的土财主等人都上来了，跪了一片。指望这样的人和自己一心一意，无疑是痴人说梦。徐建则是不愠不火，自己及时赶到阻止了周浩和小妹的接近，在找回面子这件事情上欠下的人情少多了，也算是完成了父亲交待的任务。For example, if we want to implement a JS function, Such as form validation, Then if we don't use the policy pattern in javascript described in the previous chapter to solve the form validation encapsulation code, It is a temporary form validation function written by itself. Certainly without any encapsulation, Then at this time, we will pop up a prompt to the user for whether the two values are equal. If there is a form verification on another page, their judgment method and business logic are basically the same, but the comparison parameters are different. Should we consider writing a form verification code again? So now we can consider using the template method pattern to solve this problem. Common methods are extracted, and different methods are implemented by specific subclasses. This design code also has the advantages of stronger scalability and better code ~