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This article is published in Rui Yi by Sunny; After being edited by 100 million euros, it is for the reference of the industry.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 ~ ~　　这正是三军军长李兆麟在面临危机时刻与耿殿军秘定，利用关东军警事厅厅长渡边正雄提出的“只打抗联，不打土匪”的诡计，从三军中挑选了十二名身怀绝招的抗联战士假扮土匪抗日，报号“十三省”。“省”字即意为“省悟和觉悟”。　　早年丧夫的孙妈妈为三个漂亮女儿的婚事牵肠挂肚。大女婿从商当老总，二女婿从政做官员，唯独三女婿是出租车司机，孙妈妈有些看不上三女婿。为此，丈母娘跟倔强耿直的三女婿开始了长达十年的“战争”。After repeated experiments, Huang Weiping and Ding Rui were still stuck in the design of the experience game. Until He Yihe joined.Guo Donglin Spokesman: 800,000 RMB for Two Years (Plane) Li Lingyu Spokesman: 700,000 RMB Every Two Years