Node.js Training Course

Who should attend

Our Node.js training course is aimed at developers who want to get the most out of Node.js in order to develop, test and deploy JavaScript apps, simple web services and APIs on the popular runtime.

Prerequisites

Familiarity with the basic concepts of JavaScript is required - an advanced knowledge of JavaScript will not be assumed.

Live, instructor-led online and on-site training

We appreciate that you need flexibility to fit in with new working situations - whether you're an individual, part of a distributed team, or simply have projects and deadlines to meet.

Our remote training can take place online in a virtual classroom, with content split into modules to accommodate your scheduling challenges and meet your learning goals. Get in touch today to find out how we can help design a cost-effective, flexible training solution.

As soon as it's safe, we'll return to also offering the on-site custom training courses and programmes upon which we've built our reputation.

Course Overview

• Introduction to the course
• Course Outline
• Trainer and Delegate Introductions

Introduction to Node.js

• Server-side JavaScript – the very idea!
• What is Node.js
• The Node.js environment
• What is NPM?
• Why Node.js?
• Node.js REPL
• Node.js Editors and IDEs
• HelloWorld in Node.js first program

Exploring Node.js

• Generating HTML from Node.js
• Handling Multiple URLs
• Accessing the Filesystem
• Node.js REPL
• Command Line Arguments
• Environment Variables
• dotenv Environment Variables Module

Callbacks, Events and Arrow Functions

• Need for Callbacks / Primises
• Node Event Processing Loop
• Callback Functions
• Events
• Arrow Functions

Node.js Module System

• Introduction to module system
• Importing modules – require() function
• Core modules
• Parsing URLs via the url module
• Defining Custom Modules
• Importing Custom modules
• The package.json file
• Installing Additional Modules
• Global and local installation
• Running with Nodemon

Events and Async Programming

• The history of async
• Callbacks, Promises, Async/Await
• Event emitters
• AbortController

Express for Node.js

• What is Express?
• Why Express?
• Obtaining Express
• Express HelloWorld
• Express HTTP methods and urls
• Sending Files
• Serving Static Files
• Template Engines
• Responding with JSON
• Express Application Generator

RESTFul Services with Node and Express

• REST Principles
• REST Basic Concept
• REST Design Pattern
• Express.js for REST APIs
• Creating the REST API
• Accessing REST APIs
• Using Postmon to Access RESTful APIs
• Organising Your Code
• Setting a Router
• Logging all Requests

Testing Node.js Servers

• Testing Frameworks for JavaScript
• Introduction to Mocha
• Working with Mocha
• Mocha Test Specifications
• How Mocha finds tests
• Running Mocha Tests
• Test Fixtures
• Nested describe functions
• Chai assertion library
• Testing Promises
• Testing a Rest API

Debugging in Node.js

• Debugging in Node.js
• console.log v console.err
• Node.js console.module
• The inspector
• Inspector only console methods
• Security implications
• node-inspect Debugging Tool
• Visual Studio Code debugging
• Postmon
• Error messages

Data Streams and Buffers

• Streaming Data
• Readable and Writable Streams
• Readable Streams
• Reading data via readable streams
• Handling readable stream events data and end
• Writable Streams
• Writing data via writable streams
• Handling on finish events
• Piping Data from one stream to another
• Buffers

Node.js Error Handling

• Callback errors
• Passing errors to Express
• Application specific errors
• Catching errors with promises
• Default promise error handlers
• The verror modulev
• Using the verror module
• Chaining VErrors
• Wrapping with WErrors

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Optional for custom Node courses

Connecting to MySQL

• Examples of Relational Databases
• MySQL
• Connecting to an SQL Database
• Query a Database
• Insert into the Database
• Update a row in the Database
• Delete a row in the Database
• Transaction Handling

Connecting to MongoDB

• Examples of NoSQL Databases
• MongoDB
• Installing MongoDB driver
• Connecting to MongoDB database
• Create a Collection
• Inserting into a Collection
• Find Documents in Collections
• Update Documents
• Delete Documents

Mongoose

• Object Document Mapper
• Accessing Mongoose
• Mongoose Schema
• Adding a New User Document
• Finding Documents
• Updating and Deleting Documents
• Using Mongoose with REST API