JSFiddle - React, Tailwind, and code Playground

by Wentz Wu

JavaScript

var person = {
  id: 1,
  name: "",
  sayHello: function() {
    console.log("hello");
  }
};

var jack = {};
jack.__proto__ = person;
jack.sayHello();


console.log(jack.id);
console.dir(jack);

function Person() {
  this.id = 1;
}

Person.prototype.sayHello = function() {
  console.log("hello");
}

function Friend(){

}

Friend.prototype = Person.prototype;

var alice = new Friend();
alice.sayHello();
console.dir(Friend);