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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. Righteousness胡钧这辈子第一次身着女装，在山林里跌跌撞撞地跑着，身上又累，伤口又疼，虽是假逃，却跟真逃一样狼狈不堪。办法不是没有，张良苦思冥想之后，终于找到了突破口，那就是彻底瓦解楚军将士的士气。过着关系好的朋友·泽良宜志法、美笠天智、四部诚、心木宽松、充实的每一天。秦淼天真地说道：敬文哥，你不如等葫芦哥和板栗哥一道去考，这样也好有个伴儿。The adapter mode converts the interface of a class into another interface representation expected by the client, in order to eliminate the compatibility problem of the class caused by interface mismatch. It is mainly divided into three categories: class adapter mode, object adapter mode and interface adapter mode.