The MEAN stack allows you to build fast, responsive, and maintainable full-stack websites using JavaScript. The stack uses four innovative frameworks: MongoDB for rapid data access, Express for simplified web development, Angular for componentized and fluid UI, and Node for speed. Not sure if the MEAN stack is for you? Then come to this free warm-up session. We give you a quick tour of all of the pieces of the stack. How to get you machine ready. And show you what it is like to build a site using it. This session is for both front and backend developers. We'll show you how JavaScript, the world's most ubiquitous language, can help you to master the web.

1. MEAN Stack Warmup
PeopleSpace 29 Nov 2016

2. Troy Miles
• Troy Miles aka the RocknCoder
• Over 37 years of programming
experience
• Speaker and author
• bit.ly/rc-jquerybook
• rockncoder@gmail.com
• @therockncoder
• Now a lynda.com Author!

3. Build Mobile Apps!
• Develop mobile apps with
Ionic and AngularJS
• Learn the Ionic CLI
• Fetch data via ajax
• Deploy your app to Android &
iOS
• bit.ly/ionicvideo

4. Affordable JavaScript Weekend
Workshops @PeopleSpace
• MEAN Stack / Jan 28 + 29
Create Full Stack Web Apps in JavaScript
• Intro to React / Feb 18 + 19
Deep dive into the Super Popular Library for Build
UIs
• Angular 2 / Mar 11 + 12
A Deep Dive into the Latest Version of the Popular
Front End Framework by Google

5. 20% off 24 Hours Only
code: ROCKNCODER20
Expires 11/30/2016
meanstackweekend.eventbrite.com

6. Tonight’s Agenda
• What is the MEAN Stack?
• Heroku
• MongoDB
• NodeJS + Express
• Angular 2
• Some code

7. What is the MEAN Stack?
• MEAN is a free and open-source JavaScript
software stack for building dynamic web sites and
web applications.
• Term coined by Valeri Karpov

8. MongoDB
• MongoDB is an open-source, document database
designed for ease of development and scaling.
• v3.2
• Initial release - 2009
• https://www.mongodb.org/

9. Express
• Fast, unopinionated, minimalist web framework for
Node.js
• v4.14
• http://expressjs.com/

10. Angular
• HTML enhanced for web apps!
• v2.2.3
• https://angular.io/

11. NodeJS
• Node.js® is a platform built on Chrome's V8
JavaScript runtime for easily building fast, scalable
network applications.
• v7.2.0
• https://nodejs.org/

12. Git + GitHub
• Free and open source distributed version control
system
• v2.8
• https://git-scm.com/
• https://github.com/

13. Benefits of the MEAN Stack
• Isomorphic JavaScript
• Open Source / Community Driven
• Performance
• Low Cost

14. Isomorphic JavaScript
• One language all the way thru
• Client/Server JavaScript
• JSON as the data transport format
• BSON as the data storage format
• JavaScript to control Mongo DB

15. Why is JavaScript Beautiful?
• It is a Functional Language - Closer to Lisp and
Scheme than Java or C
• First Class Functions
• Dynamic Objects
• Loose Typing
• and more...

16. ECMAScript Versions
Version Date
ES1 June 1997
ES2 June 1998
ES3 December 1999
ES4 DOA 2006
ES5 December 2009
ES6/ES2015 June 2015
ES2016 2016

17. How to use ES6 today?
• Use only the latest browsers
• Use a transpiler: Babel, Traceur, Closure,
TypeScript
• Use Node.js
• https://kangax.github.io/compat-table/es6/

18. Heroku

19. Installation
• Create a free heroku account at:
• https://www.heroku.com
• Download + install heroku toolbelt at:
• https://toolbelt.heroku.com/
• (the account is free, no credit card necessary)

20. Deploy to Heroku
• heroku login
• heroku create <app-name>
• (must be unique)
• git push heroku master
• heroku open

21. MongoDB

22. Top DB Engines
1. Oracle
2. MySQL
3. MS SQL Server
4. MongoDB
5. PostgreSQL
6. DB2
7. MS Access
8. Cassandra
9. Redis
10.SQLite

23. Who Uses It?
• Craigslist
• eBay
• Foursquare
• SourceForge
• Viacom
• Expedia
• LinkedIn
• Medtronic
• eHarmony
• CERN
• and more

24. When to Use Mongo?
• Document Database
• High Performance
• High Availability
• Easy Scalability
• Geospatial Data

25. What is a Document?
• An ordered set of keys and values
• Like JavaScript objects
• No duplicate keys allowed
• Type and case sensitive
• Field order is not important nor guaranteed

26. Node.js

27. Node v7
• Merged with the io.js project, which was at 3.x
• New version of Chrome V8
• Supports ES6
• Faster
• node -v

28. Node Package Manager
• Or npm for short
• version: npm -v
• upgrade npm: npm install npm -g

29. package.json
• required properties (error if missing)
• name & version
• optional properties (warning if missing)
• description, repository, & license
• other properties
• scripts, dependencies, config, etc.

30. Using Environment Vars
• process.env object holds environment vars
• Reading: var dbConnect =
process.env.dbConnect;
• Writing: process.env.mode = ‘test’;

31. Express

32. Installation
• npm install express-generator -g
• express <app name>
• cd <app name>
• npm install
• npm start

33. Angular

34. Angular 2 main concepts
• Component
• Data binding
• Service
• Directive
• Dependency injection
• Module

35. Metadata
• Metadata is extra information which gives angular
more info
• @Component tells angular the class is a
component
• @Directive tells angular the class is a directive

36. Component
• A class with component metadata
• Responsible for a piece of the screen referred to as
view.
• Template is a form HTML that tells angular how to
render the component.
• Metadata tells Angular how to process a class

37. Component
import {Component, OnInit} from 'angular2/core'
import {QuizService} from './quiz-service'
@Component({
selector: 'quiz',
templateUrl: './templates/quiz.html',
providers: [QuizService]
})
export class QuizComponent implements OnInit {
quizList: IQuizList[];
constructor(private _quizService:QuizService) {
}
ngOnInit() {
this.getQuiz();
}
getQuiz() {
this.quizList = this._quizService.getQuizzes();
}
}

38. Template/View
• Is a way to describe a view using HTML
• Templates can be included with the component
• Or as a URL link to an HTML file
• Best practice is to use an HTML file

39. Data Binding
C/D Attribute Binding type
—> {{ value }} one-way
—> [property] = “value” property
<— (event) = “handler” event
<—> [(ng-model)] = “property” two-way

40. Service
• “Substitutable objects that are wired together using
dependency injection (DI)”
• Used to share code across an app
• Lazily instantiated
• Angular has no “Service” defined type

41. Directive
• A class with directive metadata
• Two kinds: attribute & structural
• Attribute directives alter the look or behavior of an
existing element
• Structural directives alter the layout by adding,
removing, and replacing elements in the DOM
• A component is a directive with a view

42. Directive
import {Directive, ElementRef, Renderer, Input, OnInit} from 'angular2/core';
@Directive({
selector: '[sizer]'
})
export class Sizer implements OnInit {
@Input() sizer:string;
element:ELementRef;
renderer:Renderer;
constructor(element:ElementRef, renderer:Renderer) {
this.element = element;
this.renderer = renderer;
}
ngOnInit() {
this.renderer.setElementStyle(this.element.nativeElement,
'fontSize', this.sizer + '%');
}
}

43. Component + Directive
import {Directive, Component, ElementRef, Renderer} from ‘@angular/core';
import {Sizer} from './sizer'
@Component({
selector: 'my-app',
providers: [],
template: `
<div>
<p [sizer]="200">Butter{{name}}</p>
</div>
`,
directives: [Sizer]
})
export class App {
constructor() {
this.name = 'Monkey'
}
}

44. Dependency Injection
• A way to supply a new instance of a class with the
fully-formed dependencies it needs
• Most dependencies are services
• Angular know which services a components by
looking at the types of its constructor parameters
• Services are injected by an Injector which uses a
Provider to create the service

45. Module
• Modules are optional but a best practice
• export tells TypeScript that the resource is a
module available for other modules
• import tells TypeScript the resource in a module
• Angular ships a collection library modules

46. Links
• https://www.mongodb.org/
• http://expressjs.com/
• https://angular.io/
• https://nodejs.org/
• http://mongoosejs.com/
• https://www.heroku.com/

47. Summary
• The MEAN Stack build web apps and APIs
• It is composed of four main components
• Allows development in JavaScript throughout