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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 ~适逢事业上升期、生活奋斗期，田蓓蕾和郭一鸣这对在北京工作的小夫妻意外怀上了二胎，双方父母两处奔来，四个老人抛家舍业立志为儿孙当“北漂”。一个屋檐下，两地、三代、七口人上演起悲喜交加的家庭情感故事 。要强的田蓓蕾为前途孤注一掷丢了工作，独辟蹊径又柳暗花明；厚道的郭一鸣身受家里家外两重压力力撑梁柱，两人走到离婚的尽途又温情回归。四位老人为爱“斗法”，两度折返北京，又分别立足。一系列现实的问题如儿...除了创意和内容外，主要恐怕还是‘免费这个大杀器。7 Visibility is less than 200 meters. When fog lights, dipped beam lights, position lights and front and rear position lights are turned on, the maximum speed is 60 kilometers and the distance from the front car in the same lane is more than 100 meters.敢问张少爷，可否想过在什么样的地方生活？她可曾想过去那个皇城里面生活呢？王穷一边想，一边努力平定心绪。该剧主要讲述了拥有成功、复仇、孩子、爱情等各种欲望的四个男女之间发生的痴情爱情悬疑故事。PF-Power Forward)