ywarezk / node-idf

Node.js course given in April 2020

Node Course

This repository contains the code examples given in Node course for IDF on April 19th, 2020

About me

My name is Yariv Katz and I will be the lecturer of this course. Check out my LinkedIn to learn more. Yariv Katz LinkedIn

Course Plan

About the course

• What is Node
• What can we create with Node
• Node is not a framework so we need to learn Express as well
• Why Node?

Node Introduction

• Installing Node
• Hello World
• Understanding Javascript
• Countdown example
• Javascript Event driven
• Javascript async code
• Node structure
• Javascript JIT compiled
• REPL

Student EX. 30minutes

• Iterate on all the environment variables and print all of them.
• Make sure you manage to run you app using Visual Studio Code debugger
• Make sure you run your code while adding environment variable of your own.

Modules

• Splitting to multiple files
• what is a module
• our first module
• core modules
• community modules
• npm
• module wrapping function

Student EX. 30 minutes

• create two modules
• from one export a variable, a class, and a function
• from the other use everything you exported

---

• import the core module https
• try and use that module to send a get request to: https://nztodo.herokuapp.com/api/task/?format=json
• print the result returned from that request

Async conventions

• what is async code
• classify your async code
• error first callback
• Promise
• Event Emitter

Student EX. 30 minutes

• create a file called fetch.js
• this file will expose a function which will get a string url as an argument
• The function will return a promise containing string.
• The function will use the https module to send a get request to the url: https://nztodo.herokuapp.com/api/task/?format=json
• you need to convert the result of https.request to a promise and the promise should contain the request data.

Exceptions

• Error class
• throwing an exception
• try and catch
• What happens to the process on exception
• forever
• Promise catch
• Event Emitter - error event

Express introduction

• Server
• Application
• Middleware
• Router
• Views
• Exceptions

EX - REST Server 1hour

• Create your first REST server
• Create a module holding a singleton class called UserService
• UserService should manage an array of users where each user has a firstName and a lastName
• Our users array should be exposed via REST api to CRUD actions.

Testing with Mocha

• Mocha
• Chai
• describe
• it
• hooks

Student EX - Mocha

• Test one of the API of the REST server you created in the previous EX.
• Make sure you can run your tests with Visual Studio Code while placing breakpoints for debugging your test.

Express Advanced and patterns

• middleware creator
• static middleware
• body
• cookies
• sessions
• CSRF
• Authentication
• Passport
• JWT

Student EX. JWT authentication - 1 hour

• Your REST api should be JWT protected
• You can only query your REST api if you have the following header:

{
    Authorization: Bearer jwt-token
}

• The JWT token should be obtained from a login screen.

Working with Relational Database

• What is relational database
• What is ORM
• Sequelize Introduction
• DB Relations
• Validations
• Migrations
• Seeds
• Creating REST server
• About GraphQL
• Creating a GraphQL Server

Working with Mongo

• What is mongo
• What is mongoose
• db, collection, document

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