I am currently learning JavaScript on javascript.info and I came across this statement:
Link to the statement:
statement
But when I try this code with null in .prototype of constructor:
function Rabbit() {
this.name = 'rabbit';
}
Rabbit.prototype = null; // *
let obj = new Rabbit();
console.log(Object.getPrototypeOf(obj)); // [Object: null prototype] {}
举个例子，我得了Object.prototype分，而不是null分.
实际上，如果不是Object，它对每个值都有效，例如，这里的[[Prototype]]of obj也是Object.prototype:
function Rabbit() {
this.name = 'rabbit';
}
Rabbit.prototype = 5; // *
let obj = new Rabbit();
console.log(Object.getPrototypeOf(obj)); // [Object: null prototype] {}
当我有对象.prototype时，它就会正常工作:
function Rabbit() {
this.name = 'rabbit';
}
Rabbit.prototype = {
eats: true,
}; // *
let obj = new Rabbit();
console.log(Object.getPrototypeOf(obj)); // { eats: true }
那么，为什么会是这样呢？我是不是搞错了，不明白什么？