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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 ~ ~《爱情公寓之球爱酒吧》是国内首部以足球为背景的网络情景喜剧，它讲述了一个发生在名为“骚客”的足球酒吧，有球、有爱、有笑、有泪，奇葩创意层出不穷的故事。酒吧老板苏克是个有重度处女座洁癖的球迷囧男，为了抵御对面高富帅酒吧的韩范老板朴教授，联合毒舌御姐女招待祁丹、没谱花少主厨大罗，还有热爱自拍的呆萌90后波波组成的不靠谱青春联盟，展开了一次又一次令人捧腹大笑又创意无限的斗智斗勇。Ouyang Kerui, employee of Guangzhou Branch of China Tower Co., Ltd.: We are working to meet the needs of the three major operators in the early stage of infrastructure construction. We can use time to say that we are racing against time.我还要去上班，下次再聊。火绳枪四千柄。性格憨直的赵玖秉的整个青春，都是陪着梁薄荷一起度过的，两个青梅竹马的伙伴一路相伴成长，他们的欢笑和眼泪都与彼此有关。上了同一所大学后，一连串的意外事件导致薄荷的初恋被帅气的学长夺走。抓不到，又舍不得放手的九饼决定不再沉默，要为自己的女神奋力一搏。偏偏在薄荷眼中，他只是一个幼稚、长不大的男生。从恋人未满回归到普通朋友，从亲密无间到渐行渐远，不甘心的九饼依旧谱写出一支没有终点、只有无止尽陪伴的追爱练习曲。