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objects and prototypal inheritance

by Matthew Day

JavaScript

'use strict';


// Object Literal
var spy1 = {
	name: "James Bond",
  age: 44
}
//objectLiteral.__proto__ = {
//	licensed: true,
//}
console.log('SPY1 --- OBJECT LITERAL');
console.log(spy1);


// Constructor
function Spy2(name, age) {
	this.name = name;
  this.age = age;
}
//Spy2.prototype = {
//	licensed: true
//}
var james = new Spy2("Ethan Hunt", 36);
console.log('SPY2 --- CONSTRUCTOR');
console.log(james);


// Object Create
var spy3 = Object.create(Object.prototype, {
	name: {
    configurable: true,
    enumerable: true,
    writable: true,
    value: 'Jason Bourne'
  },
  age: {
    configurable: true,
    enumerable: true,
    writable: true,
    value: 32
  }
});
console.log('SPY3 --- CREATE');
console.log(spy3);


// Classical Inheritance
class Spy4 {
	constructor(name, age) {
    this.name = name;
    this.age = age;
  }
}
var nikita = new Spy4('Little Nikita', 26);
console.log('SPY4 --- CLASS');
console.log(nikita);