javascript原型和继承 [英] javascript prototypes and inheritance

问题描述

我的问题是对象是原型链上的最后一个对象，所有对象都从对象继承属性和方法，它是如何从Function.prototype继承方法的，为什么Object.__proto__ === Function.prototype//是，为什么Object.__proto__不为空.

My question is Object is last on prototype chain all objects inherit properties and methods from it how it is inherit methods from Function.prototype, why Object.__proto__ === Function.prototype // true, why Object.__proto__ is not null.

推荐答案

函数也是一个对象.因此它也继承自Object.

Function is also an object. So it inherits from Object too.

但是请不要被Object.__proto__所迷惑.那是浏览器添加的东西，实际上并不是语言的一部分.因此，请勿依赖或使用它.

But don't be confused by Object.__proto__. That's something the browser adds and isn't actually part of the language. So don't rely on it or use it.

本质上，Function.prototype是Object.__proto__.

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