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聊聊js中的继承 |

https://tanxu.cc/%E8%81%8A%E8%81%8Ajs%E4%B8%AD%E7%9A%84%E7%BB%A7%E6%89%BF/

聊聊JS中的继承JS中的类继承来自面向对象语言,如果一个类B“继承自”另一个类A,就把这个B称为“A的子类”,而把A称为“B的父类”也可以称“A是B的超类(super)”。子类具有父类的属性和方法,达到代码复用的目的。继承是类三大特性(封装、继承、多态)之一,在ES6之前,JS中是没有类的概念的,包括ES6以后的class也是语法糖的实现。JS中的继承是依赖原型实现的,至于JS中为甚么没有‘类’,

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