为什么在Function.prototype上没有原型属性？

Question

This question is a bit pedantic. You've been warned beforehand :)

I noticed something and I thought of sharing it with you. Let's get straight to it.

Since all functions are supposed to have a prototype property that's epicenter of the prototypical inheritance model in js, and since Function.prototype is a function in itself, you'd expect to see a prototype property on the prototype object that all functions in js get their methods and properties from by virtue of inheritance but nothing there.

Is there a logical explanation behind this decision to omit the prototype on that particular function or it was dropped just for stylistic reasons since Function.prototype.prototype might look ugly for some, or maybe the prototype prop on the Function constructor is like for the lack of a better term the god of all prototypes in js and thus can't have a prototype property itself?

Looking forward to your answers.

Happy coding :)

Answer 1

即使您的浏览器报告“功能”， 原型也是object或null。

Answer 2

"all functions are supposed to have a prototype property"

That has never been true, and is even less true in ES6:

Array.prototype.slice.hasOwnProperty('prototype')  // false
let f = () => {}
f.hasOwnProperty('prototype')  // false
let o = { m() {} }
o.m.hasOwnProperty('prototype')  // false
class C { m() {} }
(new C).m.hasOwnProperty('prototype')  // false

JavaScript distinguishes between functions, and functions that are constructors.