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捣乱的来了。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 ~　　就在大勇出海后，大勇前妻病情恶化，面硬心软的金花去医院照顾她，在临死前，前妻把女儿海君托付给金花：“你是好人，你会对她好的。”金花含泪答应了她临终前的最后要求。The above is compiled from the post-war oral memories of Kang Yuanlian, the company commander of the 2nd Company who took part in the 142 battle earlier, and Liu Guangyuan, Wang Zeduan and Zhao Mingkai, the soldiers who were responsible for guarding the 142 position and took part in the whole process of fighting the two "living biological weapons" of the Vietnamese army.玄龟狠狠地捶了他一拳，嗤笑道：好啥好？你以为小葱就选你了？回头你一个字答不上来，我瞧你还说不说运气好。　　爱之助左眼总能看到映像到底有什么意义？未知的犯罪组织又是出于什么目的使得爱之助夜夜受惊？爱之助唯一的亲人、他最爱的哥哥究竟为何而死？