var user ={
	name: "John",
	age: 34,
	hobby: "Soccer",
	isMarried: false,
};//object

var list = ["apple", "banana", "orange"];
//array

How to add properties to an object.

How to change properties to an object.

• Array : shopping list or to do list.
• Object : user information.

In game, you're controlling wizards.

• Object:
  Wizard's tall, power, experience point.
• array:
  Wizard's all the spells(마법주문).
  [abrakadabra, shazam, boo]

var user ={
	name: "John",
	age: 34,
	hobby: "Soccer",
	isMarried: false,
	spells: ["abrakadabra", "shazam", "boo"]
};

var list = [
	{	
		username: "andy";
		password: "secre";
	},
	{
		username: "jess";
		password: "123";
	} 
];

'console' is object too.

what about console.error?

So that's what methods are. They're functions inside an object.

I have one last cool thing to show you.

^I can make a empty object.

^I can make a empty array.

JAVASCRIPT TYPES

NUll

I can set property name of an empty object.
I can't set property name of null.

With this newfound power I'm going to show you how we can build a simple Facebook with what we just learned.