JavaScript 创建原型对象并将其分配给另一个对象

Question

我有：

// prototype object
var x = {
    name: "I am x"
};

// object that will get properties of prototype object
var y = {};

// assign the prototype of y from x
y.prototype = Object.create( x );

// check
console.log( y.__proto__ );

结果：

为什么？我做错了什么？

Answer 1

没有像 prototype 这样特殊的属性对象，其行为类似于函数对象。你想要的只是 Object.create( x );:

var x = {
    name: "I am x"
};

// object that will get properties of prototype object
var y = Object.create( x );

// check
console.log( y.__proto__ );

// verify prototype is x
console.log( Object.getPrototypeOf(y) === x ); // true

JavaScript 创建原型对象并将其分配给另一个对象

JavaScript create and assign a prototype object to another object

javascript

inheritance

prototype

prototypal-inheritance