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Web Development · Backend services and REST APIs

Node.js

Build backend services using Node.js, asynchronous JavaScript, modules, HTTP, Express.js, REST APIs, authentication, databases, testing, security, and deployment practices.

Move from JavaScript and Node.js fundamentals to a complete REST API Service with routes, validation, authentication, database integration, testing, documentation, and deployment readiness.

Intermediate 8 Weeks 10 Modules Online / Classroom REST API Service Project
Explore curriculum → View capstone project

Course overview

Node.js is a JavaScript runtime used to build server-side applications, APIs, command-line tools, real-time services, and full-stack web applications. It uses an event-driven, non-blocking model that is well suited to I/O-heavy workloads.

This course introduces JavaScript backend fundamentals, Node.js modules, asynchronous programming, file handling, HTTP concepts, Express.js, REST API design, middleware, validation, authentication, database integration, error handling, testing, security, and deployment.

The proposed capstone is a REST API Service for a chosen approved use case. It covers resource modeling, CRUD operations, validation, authentication, database integration, testing, documentation, and deployment readiness.

A production-ready API needs more than working endpoints. It needs clear resource design, validation, authentication, consistent error handling, useful documentation, tests, and secure configuration.

Prerequisites

This course is designed for learners with basic JavaScript knowledge. No prior Node.js experience is required.

  • Basic JavaScript knowledge.
  • Comfort with variables, functions, arrays, and objects.
  • Basic understanding of asynchronous JavaScript is helpful.
  • Basic command-line knowledge is helpful.
  • Basic HTTP and JSON awareness is helpful.
  • Basic database knowledge is helpful but not required.

Readiness activity

Explain the difference between synchronous and asynchronous code. Identify two reasons why an API should validate data before saving it to a database.

Who can explore this course?

JavaScript learners

Build backend skills

Use JavaScript beyond the browser to create server-side applications.

Frontend developers

Become full-stack

Build APIs that connect to React, Next.js, or mobile applications.

Backend learners

Create REST APIs

Learn routes, controllers, middleware, validation, and database integration.

Career changers

Enter backend roles

Develop practical skills for backend and full-stack development pathways.

What you will learn

  • Explain Node.js architecture and backend fundamentals.
  • Install and configure Node.js and npm projects.
  • Use JavaScript modules and package management.
  • Write asynchronous code using callbacks, promises, and async/await.
  • Work with files, streams, and environment variables.
  • Understand HTTP methods, headers, status codes, and JSON.
  • Build web servers and REST APIs using Express.js.
  • Design routes, controllers, middleware, and error handlers.
  • Validate request data and handle errors consistently.
  • Connect APIs to databases using approved tools.
  • Implement authentication and authorization concepts.
  • Apply security practices and protect sensitive configuration.
  • Test APIs and prepare applications for deployment.

Curriculum outline

The ten-module outline moves from JavaScript and Node.js fundamentals to a complete REST API Service. Exact database, authentication library, and deployment platform should be confirmed before delivery.

01

JavaScript and Node.js fundamentals

Review JavaScript concepts and understand how Node.js runs JavaScript outside the browser.

  • JavaScript review: variables, functions, arrays, and objects.
  • Node.js runtime and event loop concepts.
  • Browser JavaScript versus Node.js.
  • Node.js installation and version management.
  • Running JavaScript files with Node.js.
  • Node.js REPL and debugging basics.

Practice: Install Node.js, run a JavaScript file, and inspect the Node.js and npm versions.

02

Modules, npm, and project setup

Organize code using modules and manage dependencies with npm.

  • CommonJS and ES modules.
  • Importing and exporting modules.
  • npm and package.json.
  • Installing and managing dependencies.
  • npm scripts.
  • Project structure and .gitignore.

Practice: Create a Node.js project, add a dependency, and create an npm script to start the application.

03

Asynchronous JavaScript

Handle asynchronous operations using callbacks, promises, and async/await.

  • Callbacks and callback patterns.
  • Promises and promise chaining.
  • async/await syntax.
  • Error handling in asynchronous code.
  • Timers and event-driven programming.
  • Avoiding callback complexity.

Practice: Convert a callback-based example into a promise-based and async/await-based version.

04

Node.js core modules

Use built-in Node.js modules for files, paths, events, and environment configuration.

  • File system operations.
  • Path handling.
  • Events and EventEmitter.
  • Streams and buffers.
  • Environment variables.
  • Debugging Node.js applications.

Practice: Read and write a JSON file, use path handling, and load configuration from environment variables.

04

HTTP and web servers

Understand how HTTP works and create a basic web server using Node.js.

  • HTTP request and response cycle.
  • HTTP methods and status codes.
  • Headers, query strings, and request bodies.
  • JSON and content types.
  • Creating a server with the http module.
  • Routing basics.

Practice: Create a basic HTTP server that responds with JSON and handles different routes.

05

Express.js fundamentals

Build web servers and APIs efficiently using Express.js.

  • Express.js overview.
  • Creating an Express application.
  • Routes and route parameters.
  • Query parameters.
  • Request and response objects.
  • Static files and JSON handling.

Practice: Create an Express server with multiple routes and return JSON responses.

05

REST API design

Design clear, consistent, and maintainable REST APIs.

  • REST principles and resource modeling.
  • CRUD operations.
  • GET, POST, PUT, PATCH, and DELETE.
  • URL design and naming conventions.
  • Status codes and response formats.
  • Pagination, filtering, and sorting.

Practice: Design a REST API for a resource such as tasks, books, or products, including routes and status codes.

06

Middleware, validation, and errors

Add reusable request processing, validation, and centralized error handling.

  • Middleware concepts.
  • Custom middleware.
  • Request validation.
  • Input sanitization concepts.
  • Centralized error handling.
  • Logging and debugging.

Practice: Add validation middleware and a centralized error handler to an Express API.

06

Databases and data persistence

Connect a Node.js API to a database and manage application data.

  • Database options and use cases.
  • SQL and NoSQL concepts.
  • Connecting to an approved database.
  • CRUD operations.
  • Data models and schemas.
  • Environment-based configuration.

Practice: Connect an API to an approved database and implement CRUD operations for one resource.

07

Authentication and security

Protect APIs using authentication, authorization, and secure development practices.

  • Authentication and authorization concepts.
  • Password hashing concepts.
  • Sessions and tokens.
  • JWT concepts.
  • Role-based access control.
  • Common API security risks.

Practice: Design an authentication flow and identify protected routes, public routes, and required roles.

08

Testing and deployment

Test APIs, document them, and prepare them for production deployment.

  • Testing concepts and test types.
  • Unit and integration testing.
  • API testing tools.
  • API documentation.
  • Environment configuration.
  • Deployment and monitoring concepts.

Practice: Test API endpoints, document them, and prepare a deployment checklist.

09

Capstone delivery

Complete the REST API Service project and prepare a professional demonstration.

  • Define the API purpose and resources.
  • Design routes, models, and validation rules.
  • Implement CRUD operations and authentication.
  • Connect to an approved database.
  • Write tests and API documentation.
  • Document setup, environment variables, and deployment steps.
  • Present the API, decisions, and limitations.

Practice: Submit a complete REST API Service with source code, documentation, tests, and deployment instructions.

Practical exercise ideas

Complete these smaller activities before assembling the final REST API Service project.

Node.js

File manager

Read, write, and update JSON files using Node.js modules.

HTTP

Basic server

Create a simple HTTP server with JSON responses and routing.

Express

Task API

Build CRUD endpoints for a task-management resource.

Validation

Input validation

Add validation and centralized error handling to an API.

Database

Product catalog

Connect an API to a database and manage product records.

Security

Protected route

Design an authentication flow and protect selected endpoints.

Suggested eight-week learning plan

This is an illustrative learning sequence. Confirm the academy's official timetable, Node.js version, database, authentication library, and deployment platform before publishing.

Weekly focus and practical milestones
Week Focus Suggested milestone
01 JavaScript and Node.js fundamentals Run Node.js scripts and create an npm project.
02 Modules, npm, and async JavaScript Use modules, dependencies, and async/await.
03 Node.js core modules and HTTP Create a basic HTTP server with JSON responses.
04 Express.js and REST API design Build CRUD routes for a simple resource.
05 Middleware, validation, and errors Add validation and centralized error handling.
06 Databases and data persistence Connect an API to a database and implement CRUD.
07 Authentication, testing, and deployment Protect routes, test endpoints, and document the API.
08 Capstone presentation Submit and present the REST API Service.
Build a complete backend service

Capstone project

REST API Service

Build a complete REST API Service for a chosen approved use case. Possible examples include a task manager, book library, product catalogue, event booking system, blog API, inventory system, or another suitable educational backend service.

Core project requirements

  • Define the API purpose, users, and main resources.
  • Design resource models and relationships.
  • Create RESTful routes for CRUD operations.
  • Use appropriate HTTP methods and status codes.
  • Implement request validation and error handling.
  • Use middleware for reusable request processing.
  • Connect to an approved database or controlled data source.
  • Implement authentication and authorization concepts.
  • Protect sensitive routes using least-privilege access.
  • Write API documentation with endpoints and examples.
  • Write tests for key endpoints and business rules.
  • Use environment variables for configuration.
  • Document setup, database configuration, and deployment steps.

Quality requirements

  • Use clear and consistent route naming conventions.
  • Return meaningful JSON responses and status codes.
  • Validate all incoming data before saving it.
  • Do not expose sensitive data or internal errors in responses.
  • Use environment variables for secrets and configuration.
  • Do not store passwords, tokens, or API keys in plain text.
  • Use parameterized queries or approved ORM/ODM methods.
  • Apply authentication and authorization where appropriate.
  • Handle missing, invalid, and unauthorized requests consistently.
  • Write meaningful Git commits and maintain a README.
  • Document limitations and recommended next steps.

A secure API should validate input, protect credentials, control access, handle errors consistently, and avoid exposing sensitive information in responses or logs.

Suggested project structure

Keep routes, controllers, models, middleware, configuration, tests, and documentation organized for maintainability.

rest-api-service/
├── src/
│   ├── config/
│   ├── controllers/
│   ├── middleware/
│   ├── models/
│   ├── routes/
│   ├── services/
│   ├── utils/
│   └── app.js
├── tests/
├── docs/
│   └── api-documentation.md
├── .env.example
├── package.json
├── README.md
└── .gitignore

Do not commit database credentials, JWT secrets, API keys, private keys, or production environment files to a public repository.

Node.js API workflow

Backend projects are iterative. Testing results, security reviews, performance findings, and changing business needs may require updates to routes, models, validation, authentication, or deployment.

Plan

Define resources

Identify users, resources, relationships, and required endpoints.

Design

Model the API

Define routes, request bodies, responses, and status codes.

Build

Implement endpoints

Create routes, controllers, middleware, and database operations.

Secure

Protect access

Add validation, authentication, authorization, and secure configuration.

Test

Verify behavior

Test successful requests, invalid input, errors, and permissions.

Deploy

Release safely

Configure environments, build the service, deploy, and monitor it.

Express middleware runs during the request-response cycle and can handle logging, authentication, validation, error handling, and other reusable processing tasks.

Tools and technologies

The exact Node.js version, database, authentication library, and deployment platform may vary by delivery. The proposed toolkit focuses on practical Node.js backend development.

  • Node.js
  • JavaScript
  • npm
  • Express.js
  • REST APIs
  • JSON
  • HTTP
  • MongoDB concepts
  • MySQL concepts
  • PostgreSQL concepts
  • JWT concepts
  • Git
  • GitHub
  • Visual Studio Code

Supporting concepts

  • Modules, npm, and project configuration.
  • Callbacks, promises, and async/await.
  • HTTP methods, headers, and status codes.
  • Routes, controllers, middleware, and error handlers.
  • Validation, authentication, and authorization.
  • Testing, documentation, and deployment.

Learning outcomes

By completing the proposed lessons and exercises, aim to demonstrate the following abilities:

  • Explain Node.js and backend-development fundamentals.
  • Create and manage Node.js projects with npm.
  • Write asynchronous JavaScript using async/await.
  • Build HTTP servers and REST APIs with Express.js.
  • Design routes, controllers, middleware, and error handlers.
  • Validate requests and handle errors consistently.
  • Connect APIs to approved databases.
  • Implement authentication and authorization concepts.
  • Apply API security and configuration best practices.
  • Test, document, and deploy a REST API Service.

These are learning objectives, not guarantees of employment, certification, placement, or a specific backend role. Progress depends on JavaScript knowledge, practice, debugging, and continued learning.

Related career interests

Illustrative directions for continued learning, not job or placement guarantees.

  • Node.js Developer Trainee
  • Backend Developer Trainee
  • Full-Stack Developer Trainee
  • API Developer Trainee
  • Backend Engineer Trainee
  • Technology Trainee
  • Associate Engineer

Portfolio presentation ideas

  • Explain the API purpose, users, and resources.
  • Show endpoint documentation and example requests.
  • Demonstrate CRUD operations and status codes.
  • Explain validation, authentication, and authorization.
  • Present database design and error-handling strategy.
  • Discuss testing, security, and deployment considerations.

Frequently asked questions

Who is this course for?

It is suitable for JavaScript learners, frontend developers, full-stack learners, and career changers who want to build backend services with Node.js.

Do I need JavaScript experience?

Yes. Basic JavaScript knowledge is recommended, including variables, functions, arrays, objects, and asynchronous concepts.

Do I need Node.js experience?

No. The course begins with Node.js fundamentals and does not require prior Node.js experience.

Will the course cover Express.js?

Yes. It covers Express.js application setup, routes, middleware, request and response handling, and REST API development.

Will the course cover REST APIs?

Yes. It covers REST principles, resource modeling, CRUD operations, HTTP methods, status codes, and API documentation.

Will the course cover async JavaScript?

Yes. It covers callbacks, promises, async/await, error handling, and asynchronous programming patterns.

Will the course cover databases?

Yes. It covers SQL and NoSQL concepts, database connections, data models, CRUD operations, and environment-based configuration.

Will the course cover authentication?

Yes. It covers authentication and authorization concepts, password hashing, sessions, tokens, JWT concepts, and role-based access.

Will the course cover testing?

Yes. It covers testing concepts, unit and integration tests, API testing tools, and documentation practices.

What is the capstone project?

The proposed capstone is a REST API Service covering resource modeling, CRUD operations, validation, authentication, database integration, testing, documentation, and deployment readiness.

Which tools are used?

The proposed tools include Node.js, npm, Express.js, Git, GitHub, and Visual Studio Code. Confirm the academy's selected Node.js version, database, and deployment platform.

How long is the course?

The supplied course information proposes a duration of eight weeks. Confirm the academy's official schedule, tools, datasets, and assessment requirements.

Does this course guarantee a job?

No. The course can support practical learning and portfolio development, but it does not guarantee employment, placement, certification, or salary.

How do I enroll?

This page is a frontend course-information demonstration. Enrollment, payment, scheduling, and admission workflows are not implemented here.

Build backend services with JavaScript

Build your Node.js project

Study Node.js, asynchronous JavaScript, Express.js, REST APIs, databases, authentication, testing, security, and deployment through a practical portfolio project.

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