JavaScript Backend Course - Express.js & Node.js in 24 Minutes
In this video, you’ll learn how to set up an Express server from scratch, create routes, handle JSON data, connect a small front-end, and understand what middleware actually does. By the end, you’ll have a working back-end
Requirements
Tools you need:
Visual Studio Code (or a similar code editor)
https://code.visualstudio.com/
Node.js and npm installed on your system
https://nodejs.org/en/download
Live Server extension in VS Code (for a quick front-end setup)
https://marketplace.visualstudio.com/...
Skills you should have:
Solid understanding of modern JavaScript (functions, arrays, objects)
Basic familiarity with asynchronous Programming (such as promises) will be helpful
Comfortable reading and writing simple HTML (for the small front-end)
If you’re comfortable with JavaScript, this crash course will feel fast but very doable. If you’re a complete beginner, you can still follow along, but I recommend doing my JavaScript course first for maximum value.
👉 JavaScript Course: https://www.udemy.com/course/javascri...
👉 HTML & CSS Complete Course: https://www.udemy.com/course/learn-ht...
In this Express tutorial, we cover the fundamentals you need to start building real back-end applications: routes, route parameters, middleware, CORS, JSON handling, and how to connect your Express server to a simple front-end using fetch.
You’ll see how all parts work together: from receiving a request, through middleware, to sending a clean JSON response back to the browser.
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Timestamps
00:00 How to Install Express.js
00:40 Set up a Basic Server with Express.js
02:40 GET Routes (Send Messages to the Front-End
03:50 JSON (Send Data)
04:55 Route Parameters
06:55 Connect a Front-End to the Express Server
09:50 Fix CORS Problems
12:30 POST Routes (Send Form Data to the Back-End)
16:10 Express Router
19:29 Advanced Routing
21:40 Middleware
Key Concepts Covered
Setting up a new Node + Express project
Installing and importing Express
Creating basic GET and POST routes
Working with JSON data in requests and responses
Route parameters (e.g. /products/:id)
Understanding and using middleware
Handling CORS for front-end to back-end communication
Connecting a simple front-end with fetch
Basic error handling patterns in Express
Best practices for structuring your routes
Topics in this video
Express.js, Node.js, backend development, REST API, express tutorial, node backend course, express crash course, javascript backend, build an API with node and express, express routes, express middleware, express cors, fetch api, json api, beginner backend tutorial, full stack javascript, web development, Coding2GO