Express.js Fundamentals: Build REST APIs and Dynamic Web App

Name: Express.js Fundamentals: Build REST APIs and Dynamic Web App
Rating: 4.6 (5 reviews)

Build REST APIs, Master Middleware, Routing, Express Router, Error Handling, and Backend Fundamentals

Created byAymen kani

Last updated 8/2026

English

English [Auto],

What you'll learn

Build web applications and REST APIs using Express.js from the ground up.
Understand middleware, the request-response lifecycle, and how Express processes incoming requests.
Create organized applications using Express Router, route parameters, and modular routing techniques.
Implement CRUD operations, parse incoming requests, and handle errors using Express best practices.

Course content

3 sections • 18 lectures • 1h 17m total length

Welcome to this course0:17
Course Introduction1:22
Installing VScode1:18
Install Visual Studio Code from code.visualstudio.com and use this lightweight, versatile editor with extensive language support, extensions, and version control integration for writing, editing, and debugging.

Unleashing the Power of Express.js: Your Gateway to Web Development2:13
Installing expressjs3:28
Working With Middlewares7:33
Understanding How Middleware Works in Express.js3:17
Learn how Express middleware sits between requests and responses, using next to pass control and app.use order to control flow, and how to send responses.
Handling Routes10:39
Explore express routing, distinguishing middleware from routes, filtering by url path and http method, and handling root routes; learn posting data and the need for body parsing.
Parsing Incoming Requests6:27
Parse incoming request bodies by applying express.json and express.urlencoded middlewares, enabling JSON and URL-encoded data to populate req.body before routing.
Working with the Express Router4:52
Path Prefix Filtering in Express.js: Navigating Your Routes with Precision3:33
Apply an admin path prefix to routes in Express to differentiate admin and shop routes and restrict access. Group similar routes under a common prefix to improve security and maintainability.
Creating a Product Model: Consistent Data Structure8:13
Create a product model class with name, price, and id, and implement an asynchronous save method that writes the product list to a JSON file serving as a fake database.
Adding Products: Using Product Model and The Fake Database5:10
Fetching Products from the API3:25
Mastering Error Handling in Express.js: Keeping Your App Robust and Reliable6:33
Building a deleteOne Method for Your Product Model3:34
Create a static async deleteOne method on the product model to remove a product by id from the fake database using fs readFile, JSON.stringify, and a promise.
Understanding Dynamic Route Parameters in Express.js5:12
Learn to use dynamic route parameters in express.js to delete a product by id, extracting id from URL params and handling success with 200 and errors with 500.

Requirements

Basic JavaScript knowledge is recommended. Familiarity with Node.js fundamentals will help, but no prior Express.js experience is required.

Description

Express.js is one of the most widely used frameworks for building web applications and REST APIs with Node.js. In this course, you'll learn how Express works from the ground up by building real server-side applications while understanding the concepts behind every feature.

Instead of simply copying code, you'll develop a solid understanding of how Express handles requests, middleware, routing, and application structure so you can confidently build your own backend applications.

Throughout the course, you'll progressively build an Express application while learning industry-standard development practices that can be applied to larger projects.

What You'll Learn

Install and configure Express.js
Create your first Express server
Understand how the request-response lifecycle works
Build and organize routes
Work with Express Router
Use middleware effectively
Understand how middleware executes internally
Parse incoming HTTP requests
Handle dynamic route parameters
Build a simple Product model
Create REST API endpoints
Retrieve, create, and delete data
Implement error handling strategies
Structure Express applications for maintainability

Course Structure

The course is designed as a practical, hands-on learning experience. Each lecture introduces a new concept and immediately demonstrates it through real code examples.

Topics include:

Express.js installation and project setup
Middleware fundamentals
Route handling
Express Router
Route prefixes
Request parsing
Building a simple data model
CRUD operations
Error handling
Dynamic routing

Who This Course Is For

This course is ideal for:

JavaScript developers who want to learn backend development
Node.js developers who want to start using Express
Students preparing to build REST APIs
Developers looking to strengthen their server-side fundamentals
Anyone interested in understanding how modern web servers are built with Node.js

Prerequisites

Before taking this course, you should have:

Basic JavaScript knowledge
Basic familiarity with Node.js
A computer capable of running Node.js

No prior experience with Express.js is required.

By the end of this course, you'll understand the core concepts of Express.js and be able to build, organize, and maintain your own backend applications using one of the most popular frameworks in the Node.js ecosystem.

Who this course is for:

JavaScript developers who want to start backend development with Express.js.
Node.js developers looking to learn the Express framework.
Beginners who understand JavaScript and want to build REST APIs.
Students preparing to learn full-stack development with Node.js and Express.
Developers who want a solid understanding of routing, middleware, request handling, and backend architecture before moving to databases and authentication.

Express.js Fundamentals: Build REST APIs and Dynamic Web App

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Course content

Course Introduction3 lectures • 3min

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ExpressJs Framework: Building Dynamic Web Apps14 lectures • 1hr 14min

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Description

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