Use Object.getPrototypeOf to get Prototype - Node.js Object

Node.js examples for Object:Prototype

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Description

Use Object.getPrototypeOf to get Prototype

Demo Code


function Foo(who) {
    this.me = who;// w  w  w .  j  ava 2  s .co m
}
Foo.prototype.identify = function() {
    return "I am " + this.me;
};

var a1 = new Foo("a1");
var a2 = new Foo("a2");

a2.speak = function() {
    alert("Hello, " + this.identify() + ".");
};

/*console.log(a1.constructor === Foo);
console.log(a1.constructor === a2.constructor);
console.log(a1.__proto__ === Foo.prototype);
console.log(a1.__proto__ === a2.__proto__);*/

console.log('Object.getPrototypeOf("foo")', Object.getPrototypeOf("foo"));

var proto = [];
var obj = Object.create(proto);
result = Object.getPrototypeOf(obj)
console.log('result', result);

console.log(Object.getPrototypeOf(obj) === proto);

console.log(a1.__proto__ === Object.getPrototypeOf(a1));
console.log(a2.constructor === Foo);
console.log(a1.__proto__ === a2.__proto__);
console.log(a2.__proto__ === a2.constructor.prototype);

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