Introduction to JavaScript

JavaScript 101.js

'use strict'

// An empty JavaScript object
var myEmpty = {};

// Create an object using object literals
var monkey = { name: "John", age: 23, color: "blue" };

console.log(monkey.name)        // John

// You don't actually need to declare a property for it to be there:
monkey.height = 200;

console.log(monkey.height)      // 200

// A property can also be a function
var gorilla   = { name: "ted", age: 42, color:function() { return "orange" } };

console.log(gorilla.color())    // orange

// we can create new objects using a constructor function
function Monkey(name, color) {
    this.name = name;
    this.color = color
}
var bill = new Monkey("bill", "pink");

// bill is a new object
console.log(bill.color); // pink