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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 ~ ~这是田遥头一次将他们两人画入同一幅画中。杨长帆气沉丹田，冲西方大吼：老船主，咱们弟兄，把杭州烧给你了，你可得接着。再说，正殿那边依旧人声喧哗，他听了心里十分难受。胡敦却不管他后面的话，只反驳前面的话道：张灵儿曾经替她兄长坐镇蜈蚣岭，焉知那黎章不是她假扮的？汪魁怒道：胡伯父，讲话要凭理：之前黎章和林聪同时在军营中，何必假扮？黎将军带兵偷袭蕃国时，林聪却是不在的，那时她才假扮了黎将军。Four, genius and celebrities are using the method于是这菜便体面起来，好歹没那么让人厌了，但还是有许多人不爱闻那味道。