Node.js Crash Course: Build a REST API in a Weekend

Node.js Crash Course: Build a REST API in a Weekend by Dmytro Vasyliev delivers a fast‑track, hands‑on learning path for anyone searching for a free Node.js course, an Udemy Node.js course, or looking to learn backend development online in 2026. The curriculum focuses on core Node.js fundamentals, the event loop, async patterns, and building a production‑ready REST API from scratch. Updated July 2026, this Udemy offering equips you with practical coding skills and a certificate that validates your new backend expertise.

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What You'll Learn

• Build a complete REST API using Node.js, Express‑style routing, and HTTP core modules.
• Master the Node.js event loop, Promises, and async/await for efficient asynchronous code.
• Learn how to set up a development environment, initialize projects with NPM, and manage dependencies.
• Understand ES modules versus CommonJS and apply them in real‑world Node.js applications.
• Create CRUD endpoints (GET, POST, PUT, DELETE) and implement query‑string filtering for dynamic data retrieval.
• Implement environment variables and configuration management for secure, scalable server setups.
• Analyze HTTP request and response cycles to debug and optimize backend performance.
• Apply best practices for error handling, modular code structure, and code documentation in Node.js projects.

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Course Details

• Instructor: Dmytro Vasyliev
• Rating: 4.3 stars (based on student reviews)
• Level: Beginner
• Language: English (en‑US)
• Certificate: Yes, upon completion
• Includes: Lifetime access, mobile‑friendly video lessons, full source‑code repository

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What This Course Covers

1. Environment Setup & Project Initialization

• Install Node.js, configure IDE, and verify runtime installation.
• Initialize a new project with npm init and understand package.json fields.
• Differentiate between Node.js runtime and browser JavaScript environments.
• Set up Git version control and connect to remote repositories for collaboration.

2. Core Node.js Concepts

• Explore the single‑threaded event loop and its impact on I/O operations.
• Work with callbacks, Promises, and async/await to manage asynchronous flows.
• Compare ES6 modules (import/export) with CommonJS (require/module.exports).
• Debug asynchronous code using Node.js built‑in inspector and console tools.

3. HTTP Core Module & Server Creation

• Create an HTTP server using the built‑in http module without external frameworks.
• Parse incoming requests, extract URLs, query strings, and request bodies.
• Manage response headers, status codes, and content types for API compliance.
• Implement basic logging middleware to track request details and errors.

4. REST API Design & Routing

• Design RESTful endpoints following industry conventions for resource naming.
• Build route handlers for GET, POST, PUT, and DELETE operations on a sample data set.
• Implement query‑parameter filtering to retrieve subsets of data dynamically.
• Secure routes with simple token‑based authentication for demonstration purposes.

5. Data Persistence & Environment Variables

• Store data in in‑memory collections and discuss transition to databases.
• Use the dotenv package to load environment variables from a .env file.
• Protect sensitive information such as API keys and database credentials.
• Demonstrate configuration profiles for development, testing, and production environments.

6. Testing, Debugging & Deployment Basics

• Write basic unit tests for route handlers using popular testing frameworks.
• Apply console and debugger techniques to trace execution flow and resolve bugs.
• Prepare the application for deployment on cloud platforms like Her