OpenJS Node.js Application Developer (JSNAD) Online Training

This intermediate OpenJS Node.js Application Developer (JSNAD) training prepares software developers to build high-performance Node.js applications, integrate databases and test and debug apps for production readiness.

Node.js is a server-side JavaScript runtime environment built on Chrome's V8 JavaScript engine, it's a preferred choice for building scalable, event-driven applications. The JSNAD is a certification that represents all the skills and knowledge a web developer, app developer or server-side administrator needs to effectively use Node.js to build, test, and debug high-performance apps.

This course explains the topics you'll find on the exam but also gives you lots of opportunities to practice implementing what you learn about buffer and streams, control flow, error handling, the module system, unit testing, and more.

For supervisors, this JavaScript training can be used to onboard new software developers, curated into individual or team training plans, or as a JavaScript reference resource.

JSNAD: What You Need to Know

This JSNAD training has videos that cover topics including:

Designing and developing web applications in Node.js
Implementing and navigating Node.js core APIs
Debugging Node.js
Managing asynchronous operations
Controlling JS and Node.js processes

Who Should Take JSNAD Training?

This OpenJS Node.js Application Developer (JSNAD) training is considered professional-level JavaScript training, which means it was designed for software developers. This Node.js skills course is designed for software developers with three to five years of experience with back-end JavaScript runtime environment.

New or aspiring software developers. If you hope to have a career as a software developer, learning Node.js is a valuable investment: companies need scalable, real-time applications. Having the JSNAD proves to your future employers that you can work on diverse projects across web development, IoT, and cloud computing.

Experienced software developers. This course and the JSNAD are good for experienced software developers who want to fill in any gaps in their experience and knowledge. If you've developed with JavaScript, Express.js, and designed RESTful APIs, you'll be able to move quickly through this course and spend time on the parts of Node.js you might have overlooked the last few years.

Skill:
Learn the Basics of Node.js Streams
- 1. Basics of Streaming
  14 mins
- 2. Streaming Files
  1 min
- 3. Challenge & Solution: Reversing Words
  3 mins
Skill:
Manipulating Node.js Buffers
- 1. Slicing Buffers with "Subarray"
  14 mins
- 2. Combining Buffers with "Concatenate"
  8 mins
- 3. "Array-Like" Buffer Methods
  9 mins
- 4. Challenge & Solution: Buffer Operations Review
  12 mins
Skill:
Introduction to Node.js Buffers
- 1. Creating Buffers
  12 mins
- 2. Copying Buffers
  10 mins
- 3. Challenge & Solution: Printing an ASCII Chart
  10 mins
Skill:
Node.js Buffer Integer Data Formats
- 1. Basics of Writing Numbers to Buffers
  10 mins
- 2. Reading Integers from Buffers
  9 mins
- 3. Challenge & Solution: Storing Multiple Numbers in a Buffer
  10 mins
Skill:
Node.js Buffer Float Formats
- 1. How Floats Work
  13 mins
- 2. How Floats are Stored in Buffers
  14 mins
- 3. 64 Bit "Doubles" and Little-Endian Floats
  6 mins
- 4. Challenge: Writing Multiple Floats
  9 mins
Skill:
Node.js Buffer String Formats
- 1. Storing Arrays and Objects in Node.js Buffers
  7 mins
- 2. Challenge & Solution: Storing Objects
  17 mins
Skill:
Basic Buffer Applications
- 1. Reading Files Into Buffers
  9 mins
- 2. Challenge & Solution: Deciphering XOR Files
  6 mins
Skill:
Intermediate Callback Operations
- 1. Avoiding the Pyramid of Doom
  1 min
- 2. Passing On Data Without Nesting
  6 mins
- 3. Creating Helper Functions with Callbacks
  10 mins
- 4. Executing Async Operations in Parallel
  14 mins
- 5. Challenge & Solution: Deleting In Parallel
  6 mins
Skill:
Manage Asynchronous Operations with Callbacks
- 1. Basics of Callbacks
  7 mins
- 2. Callbacks with Args
  13 mins
- 3. Callbacks Are Not Sequential!
  13 mins
- 4. Challenge & Solution: Back-to-Back Async Operations
  13 mins
Skill:
Intermediate Promise Concepts
- 1. Creating Our Own Promises
  12 mins
- 2. Resolving and Rejecting Promises with Values
  8 mins
- 3. Creating a setTimeout Promise
  9 mins
- 4. Challenge & Solution: Promisifying Callback Functions
  15 mins
Skill:
Manage Asynchronous Operations with Promises
- 1. Basics of Promises
  8 mins
- 2. Basic Promise Syntax
  6 mins
- 3. Chaining Multiple Async Operations
  9 mins
- 4. Promises Are Sort-of Sequential
  8 mins
- 5. Handling Errors with Promises
  8 mins
- 6. Challenge: Rewriting Callbacks
  8 mins
Skill:
Work with Async and Await in JavaScript
- 1. Introduction to Async/await Syntax
  8 mins
- 2. Converting Between Promises and Async/Await
  9 mins
- 3. Error Handling with Async/Await
  2 mins
- 4. A Closer Look At Async/Await Execution Flow
  8 mins
- 5. Challenge & Solution: Using Async/Await with Concurrency
  8 mins
Skill:
Basic Promise Concurrency Methods
- 1. The Promise.all Method
  15 mins
- 2. The Promise.allSettled Method
  13 mins
- 3. Mapping Asynchronously
  10 mins
- 4. Challenge & Solution: Creating a "Map Async" Function
  5 mins
Skill:
Other Promise Concurrency Methods
- 1. The Promise.race Method
  12 mins
- 2. The Promise.any Method
  4 mins
- 3. The Promise.resolve and Promise.reject Methods
  13 mins
- 4. Challenge & Solution: Recreating the Concurrency Methods
  14 mins
Skill:
Learn the Basics of Generator Functions
- 1. The Basic Idea of Generator Functions
  11 mins
- 2. Basic Generator Syntax and Usage
  10 mins
- 3. Creating Infinite Generators
  10 mins
- 4. Challenge & Solution: Generating Primes
  6 mins
Skill:
Asynchronous Handling With the Async Library
- 1. Basics of the Async Library
  1 min
- 2. How Async's Callbacks Work
  8 mins
- 3. Automatic Retries with the Async Library
  8 mins
- 4. Running Functions Based on Their Requirements
  19 mins
- 5. Challenge: Check Out Other Async Library Functions
  1 min
Skill:
Intermediate Generator Concepts
- 1. Delegating Generators
  15 mins
- 2. Delegating to Iterable Objects
  7 mins
- 3. Passing Values Into Generators
  1 min
- 4. Challenge & Solution: Collecting User Data
  2 mins
Skill:
Asynchronous Handling With the Bluebird Library
- 1. Promisifying With Bluebird
  11 mins
- 2. Bluebird Promise Syntax & Cancellation
  9 mins
- 3. Specific Error Handling with Bluebird
  8 mins
- 4. Setting Timeouts in Bluebird
  6 mins
- 5. Challenge & Solution: Canceling Promises in Practice
  12 mins
Skill:
Managing Asynchronous Code with RxJS
- 1. Basics of the RxJS Library
  8 mins
- 2. Creating and Subscribing to Observables
  16 mins
- 3. Handling Errors and Completion
  8 mins
- 4. RxJS Operators
  12 mins
- 5. Challenge & Solution: User Input Observable
  7 mins
Skill:
Advanced Generator Concepts
- 1. Can Generator Functions Have Return Values?
  13 mins
- 2. Mapping Generators
  1 min
- 3. Filtering and Slicing Generators
  10 mins
- 4. Challenge & Solution: Generators with Promises
  5 mins
Skill:
Advanced Child Process Topics
- 1. The Spawn Function
  9 mins
- 2. Running Node Scripts with Spawn
  10 mins
- 3. Child Process Configuration Options
  10 mins
- 4. Other Inter-Process Communication Options with Spawn
  9 mins
- 5. Challenge & Solution: Convert Exec to Spawn
  1 min
Skill:
Run Shell Commands with Child Processes
- 1. Running Shell Commands with Exec
  9 mins
- 2. Other Shell Command Possibilities
  13 mins
- 3. Running Node Scripts with Exec
  7 mins
- 4. Challenge & Solution: Promisifying Shell Operations
  12 mins
Skill:
Intermediate Child Process Concepts
- 1. The Different Process Events
  1 min
- 2. Combining Processes with Promises
  14 mins
- 3. Challenge & Solution: Combining Processes with RxJS
  5 mins
Skill:
Manage CPU-Intensive Tasks with Child Processes
- 1. Running a Simple Child Process
  9 mins
- 2. Passing Data Into Child Processes
  1 min
- 3. Getting Data From Child Processes
  8 mins
- 4. Challenge & Solution: Running Multiple Child Processes
  3 mins
Skill:
Basics of File I/O in Node.js
- 1. Reading Files
  14 mins
- 2. Deleting, Moving, and Copying Files
  7 mins
- 3. Challenge & Solution: Storing Program Data
  11 mins
Skill:
Using Node In The Terminal
- 1. Running JavaScript Files and Code
  12 mins
- 2. Setting Environment Variables
  9 mins
- 3. Command Line Arguments
  1 min
- 4. Installing NPM Packages
  7 mins
- 5. Challenge & Solution: Greeting with Env Variables and Args
  3 mins
Skill:
Intermediate File Operations
- 1. The path.join Function
  9 mins
- 2. Other "path" Functions
  16 mins
- 3. Challenge & Solution: Reading Multiple Files In a Directory
  7 mins
Skill:
Advanced File I/O Operations
- 1. Getting File Stats
  13 mins
- 2. Challenge & Solution: Observing Files
  7 mins
Skill:
JavaScript Basics Review: Inheritance
- 1. Prototypal Inheritance Examples
  1 min
- 2. Prototypal vs. Classical Inheritance
  14 mins
- 3. Challenge & Solution: Shape Prototypes
  10 mins
Skill:
JavaScript Basics Review: Data Types and Functions
- 1. JavaScript's Data Types: Strings
  11 mins
- 2. JavaScript's Data Types: Numbers and BigInts
  6 mins
- 3. JavaScript's Data Types: Booleans, Objects, and More
  15 mins
- 4. The Different Function Syntaxes
  9 mins
- 5. Challenge & Solution: Falsy and Truthy
  5 mins
Skill:
The Assert Module In-Depth
- 1. Different Ways to Check for Equality
  14 mins
- 2. Testing for Inequality
  9 mins
- 3. Testing for Failure
  7 mins
- 4. Challenge & Solution: Writing A Test Suite
  4 mins
Skill:
Basics of Unit Testing Node.js Applications
- 1. The Node.js "assert" Function
  12 mins
- 2. More Assertion Examples
  10 mins
- 3. Assertion Utilities
  5 mins
- 4. Challenge & Solution: Writing Your Own Assertions
  3 mins
Skill:
Testing Asynchronous Code in Node.js
- 1. Testing Callback Code
  10 mins
- 2. Testing Callback Errors
  11 mins
- 3. Testing Promises
  10 mins
- 4. Challenge & Solution: Writing Async Tests
  3 mins
Skill:
Advanced Testing in Node.js
- 1. Skipping Tests
  9 mins
- 2. Running Groups of Tests
  6 mins
- 3. Filtering Tests By Name
  5 mins
- 4. Mocking Functions
  16 mins
- 5. Challenge & Solution: More Complex Mocking
  9 mins
Skill:
Introduction to Node.js Web Sockets
- 1. Sending Messages Through Socket Connections
  9 mins
- 2. Handling Closed Connections
  8 mins
- 3. Challenge & Solution: Prefixed Messages
  12 mins
Skill:
Node.js Websocket Libraries
- 1. The "Socket.io" Library
  11 mins
- 2. Other Socket.io Features
  14 mins
- 3. The SockJS Library
  13 mins
- 4. Challenge & Solution: SockJS Broadcasting
  1 min
Skill:
Node.js Testing Libraries: Mocha
- 1. Setting Up Mocha
  15 mins
- 2. Mocha's Hooks
  13 mins
- 3. The .Mocharc File
  10 mins
- 4. Challenge & Solution: Mocharc Changes
  3 mins
Skill:
Node.js Testing Libraries: Chai
- 1. Making Basic Chai Assertions
  12 mins
- 2. An Easier Way to Import Chai
  7 mins
- 3. Making "Expect" Assertions
  13 mins
- 4. Making "Should" Assertions
  5 mins
- 5. Challenge & Solution: Exploring Chai Assertions
  4 mins
Skill:
The Node.js Event System
- 1. The Observer Pattern
  6 mins
- 2. EventEmitter Basics
  14 mins
- 3. File Loading with EventEmitter
  9 mins
- 4. Progress Reporting with EventEmitter
  8 mins
- 5. Challenge & Solution: Building a Timer
  3 mins
Skill:
Node.js Debugging Basics
- 1. Basic Debugging Tools
  8 mins
- 2. Debugging with the --inspect-brk Flag
  9 mins
- 3. Setting Breakpoints
  10 mins
- 4. Challenge & Solution: Debugging with node inspect
  5 mins
Skill:
The Node.js Module System
- 1. Module Basics
  7 mins
- 2. The CommonJS Module System
  14 mins
- 3. The ES Module System
  14 mins
- 4. Challenge & Solution: When Are Modules Loaded?
  2 mins
Skill:
Node.js Process Control
- 1. Node Process Basics
  8 mins
- 2. Listening for Process Events
  11 mins
- 3. Other Process Events
  9 mins
- 4. The OS Module
  10 mins
- 5. Challenge & Solution: Uptime Notifier
  3 mins

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The Basic Idea of Generator Functions

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Course overview

29 HOURS OF TRAINING

42 SKILLS

231 VIDEOS

0 VIRTUAL LABS

0 PRACTICE EXAMS

Shaun Wassell

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OpenJS Node.js Application Developer (JSNAD) FAQs: Cost, Training, Value

What is OpenJS and what is NodeJS application development?

OpenJS is a professional organization, it's made up of JavaScript developers and professionals who are trying to solidify and improve the future of JavaScript. Node.js is a JavaScript runtime built for Chrome's V8 JavaScript engine. Node.js has libraries, tools and a community that was, at one time, popular for building web servers and backend APIs, but has since expanded far beyond those to streaming, IoT, microservices and more.

Is there any official certification for JavaScript or Node.js?

Yes, there are official certifications for proving familiarity and expertise with JavaScript and Node.js. JavaScript is an open standard, so there isn't a single organization that "owns" it like other proprietary technologies, but nonetheless organizations like OpenJS and The Linux Foundation are globally recognized as the authorities on JavaScript and Node.js best practices and professional certifications, providing validation of proficiency for developers while enhancing industry standards and collaboration.

What does a Node.js application developer do?

A typical day for a Node.js application developer will vary a lot from one job to the next, but many of the core expectations remain the same. A Node.js developer designs, builds, and maintains server-side software with JavaScript. They use the Node.js runtime to build scalable web servers, APIs and other back-end applications. A Node.js app developer writes codes, implements features, debugs and generally optimizes performance.

Are Node.js certifications worth it?

Yes, in an industry like development, certifications from the Linux Foundation like the JSNAD (OpenJS Node.js App Developer) are worth it. There aren't many credentials that are internationally recognized representations of a certain amount of skill and knowledge creating web-based applications. The Linux Foundation has an excellent reputation for developing certifications that prove a developer's readiness and proficiency in Node.js app development, enhancing job prospects and credibility.

Was Node.js discontinued? Is Node.js still relevant?

Not only was Node.js not discontinued, it remains as relevant as it ever was – maybe more. Some people believe that Node.js was discontinued or became unsupported, but this is not true: Node.js and the JS Foundation merged and formed the OpenJS Foundation. The OpenJS Foundation remains committed to the Node.js environment, so although misconceptions exist, Node.js is actively maintained and widely used in modern web development.

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