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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.Although there are subclasses in java that implement the interfaces of the parent class, But I think javascript can be different from java, It is possible that the parent class in java is an empty class, Subclasses to implement the interface of the parent class, in javascript, I think the common code is completely written in the parent function. If the business logic needs to be changed in the future, or new business logic is added, we can completely use subclasses to rewrite the parent class, so the code has strong scalability and is easier to maintain. Since I am not a professional java, please understand if there is any mistake in describing the knowledge points in java ~ ~改编自藤泽周平的同名小说藤澤周平的同名小说。主人公佐之助，混跡於江戶時代的黑暗世界，一日在常去的酒亭，他結識了伊兵衛。在伊兵衛的慫恿與自己渴求過上美好生活的雙重誘惑下，他最終同意，和一群陌生男子搭檔，合夥搶劫商家七百兩的巨款。。。万中无一的天才少年唐三与酗酒的铁匠父亲唐昊相依为命，唐三渴望母爱，但唐昊始终对妻子之事守口如瓶。直到唐三的双生武魂觉醒，父亲才告诉他只有成为斗罗大陆的至强至勇，拥有强大的实力和内心，才有资格承受母亲的消息。其实季木霖多少有些尴尬，毕竟徐风昨天晚上坐他怀里的回忆还未彻底消散，但是看着眼前这个没心没肺的家伙，心底最后一点拘谨也都放开了，冷漠的面具重新戴在脸上毫无违和感。因父亲昏迷从首尔来到哥伦布的金，巧遇当地少女凯西，两人展开城市建筑巡礼，互相倾吐焦虑与憧憬，渐渐渗透冰冷的建筑体，敞开情感的裂缝。面对居民与游客身份的易位，生死的来去，他们也如空间中的物件般，学会在新的关系中，再次挪动与重新安置自己。影像散文作者（video essayist）Kogonada的首部剧情长片，淋漓展现其镜头语言的敏锐度，如现代主义建筑般对称恒定的画面结构，窜流着低限却潜在的剧情，暗指建筑空间的本质，实为人生活与情感萌发的场域。David Tennant和Michael Sheen两人将回归制作新一季《舞台剧 Staged》。