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虽然范依兰有些才感觉。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 ~Public class Observer1 implementations Observer {唐贞观年间，西凉叛乱，李世民御驾亲征，被敌帅苏宝同围困在锁阳城，主帅，薛仁贵也被苏宝同的毒刀所害，命在旦夕。薛仁贵之子薛丁山获知父亲遇难，参加了二路平乱大军，西去救父。一路上，薛丁山收服山贼窦一虎、大战苏宝同，最终将薛仁贵和李世民从锁阳城救出。李世民班师回朝，留下薛氏父子继续平乱。苏宝同搬来救兵并派出手下大将樊洪前去挑战。樊洪之女樊梨花对薛丁山一见钟情，不惜和家人反目，献关投薛。薛丁山却听信谄言，误以为樊梨花是杀父害兄的不义之人，将樊梨花赶出唐营。后来在程咬金等人的撮合帮助下，上演了“三休三请樊梨花”的动人故事。最终几经离合，薛丁山和樊梨花终于结为夫妻。在他们的共同努力下，唐军终于平定了西凉之乱。　　屠呦呦（周迅 饰）：展示她研发抗疟新药青蒿素的全过程，并回答人们对其个人获得诺贝尔奖的某些疑惑。该剧讲述了费尽千辛万苦替成为儿子的女婿筹备婚礼的丈母娘与女婿的新妻子之间矛盾、憎恶、和解的故事The Upload.prototype.init method does some initialization work, including creating some nodes in the page. In these nodes, two buttons are mainly used to control the upload process. The first button is used to pause and continue upload, and the second button is used to delete files: