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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 ~1 Connotation of JIT Production　　从停尸间再次醒来的萨蒂惊异于自己的死而复生，但不久她便发现，她已变成了嗜血如命的吸血鬼。在本性和人性间痛苦挣扎萨蒂决定摧毁邪教组织，为所有的受害者报仇……All belong to Strong Treasure BeadsIt's a trivial matter.想抓犯人，却抓到爱人！