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深入理解JavaScript原型链与继承
source link: https://juejin.im/post/5c08ba1ff265da612577e862
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原型链 原型链一直都是一个在JS中比较让人费解的知识点，但是在面试中经常会被问到，这里我来做一个总结吧，首先引入一个关系图： 一.要理解原型链，首先可以从上图开始入手，图中有三个概念： 1.构造函数： JS中所有函数都可以作为构造函数，前提是被new操作符操
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