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杨老爷一摆手，立刻免了。苏岸再次将目光转向陈平，只要陈平先生也认可，那此事就算是没什么问题了。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 ~更是嘴一张，手一双了，再不是原先那个活泼甜美的小女娃了。3. Turn off the mobile phone (if it has not been turned off yet);