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该剧讲述了从1997年至2014年十几年的跨度下，刘诗诗与郑恺饰演的男女主角从高中到社会，在理想与现实中迷茫、妥协与抗争的故事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 ~In the above code, we use three functions, order500, order200, orderNormal to handle its own business logic, If the current own function cannot handle things, We pass it to the following function to handle it. By analogy, Until there is a function that can handle him, Otherwise, the responsibility chain mode will leave the chain directly, telling that it cannot be processed and throwing an error prompt. Although the above code can be used as the responsibility chain mode, we can see from the above code that the Order500 function depends on functions such as Order200, so there must be this function, which also violates the open-closed principle in object-oriented. Let's continue to understand writing flexible and detachable responsibility chain nodes.报亭前。踏入王宫的那一刻，尹旭才感受道气氛的凝重，几乎所有的楚国重臣都来了，大殿上一片黑压压的人头，一个个都面带忧色，紧张不已。饿其体肤……，这话你们都学过，娘平日也从不娇惯你们，不是娘吹：我张家的娃儿就是比其他人强，搁哪娘都放心。