JavaScript_intro.md

###Objectives:

• Understand why JavaScript is so awesome
• Understand what an Object is
• Apply OOP principle to pseudocode an object
• Create an object in Sublime Text

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JavaScript: Intro

1. NOT to be confused with Java
2. Created in 10 days in May 1995 by Brendan Eich
3. Original name was Mocha, a named chosen by Marc Andreessen (Founder of Netscape)
4. ECMAScript (European Computer Manufacturers Association) is the name of the official standard.

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#Why is JavaScript important?

1. All browsers have JavaScript interpreters built in!
2. There are 3 ultra-fast JavaScript engines around (FireFox SpiderMonkey, Google V8, and Safari JavaScriptCore) fiercely competing to become faster and faster
3. JavaScript is most popular programming language in the world!

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##What IS JavaScript?

JavaScript is a scripting language because it uses the browser to do its work. It is flexible, and allows for creative programming designs. This mix of features makes it a multi-paradigm language, supporting object-oriented programming.

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#Variables

Variables are containers for storing data values. Variables MUST be identified with unique names, called identifiers

• case-sensitive
• begin with a letter
• contain letters, digits, underscores, and dollar signs

var five = 5;	
var rob = "Instructor";

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Functions

###Functions are a way of actually doing things

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function sayHello() {
  console.log('hello');
}
// then we run our function after we create it
sayHello();

---

// we can also pass things into our function
function sayHello(name) {
  console.log('hello ' + name);
}
sayHello('rob');
// or variables

var robName = 'rob';

sayHello(robName);

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#Objects

• An Object-Oriented Programming (OOP) language is organized around objects.
• their 1) attributes and 2) behaviors

---

Car object

• attributes
  • color
  • price
  • top speed
• behaviors
  • drive
  • stop

---

		// Created a variable with the object, car!
		var car = {}; 
		car.color = "blue";
		car.price = 50000;

		car.drive = function(){
			console.log("Drive");
		}
		
		car.stop = function(){
			console.log("Stop");
		}
		
		car.turnOnLights = function(){
			console.log("Lights are on");
		}		

---

#Arrays

An array is a data structure, AKA a way to organize data.

In JavaScript, it gives us the ability to store multiple values inside a single variable

// a cars variable contain cars
var cars = ['Infiniti', 'Volvo', 'BMW];

// print the variables out
document.write(cars[0]);
document.write(cars[1]);
document.write(cars[2]);