JavaScript创建并将原型对象分配给另一个对象

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？我究竟做错了什么？

Answer 1

没有像prototype对象那样的特殊属性,就像功能一样.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