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Build a Real-Time Chat Application with Node.js

A complete hands-on course for absolute beginners. You will build a real-time chat app with rooms, message bubbles, typing indicators, online users, and deployment to Railway. Every lesson includes full code, tips, common mistakes, and teaching notes — perfect for self-study or classroom instruction.

Prerequisites: Basic JavaScript, Node.js installed on your computer

10 lessons 145 views Beginner Free

Start lesson 1

Build a Real-Time Chat Application with Node.js tutorial

Course contents

Part 1 — Getting Started

1 Introduction — What We Are Building 5 min 2 Project Setup — Folder, npm & Dependencies 5 min

Part 2 — Build the App

3 Building the Server — Express & Socket.IO 5 min 4 Frontend HTML — Login Screen & Chat Layout 5 min 5 Frontend CSS — Modern Chat UI Design 5 min 6 Frontend JavaScript — Connect & Send Messages 5 min

Part 3 — Run, Learn & Extend

7 Running the App & Testing in Two Tabs 5 min 8 How Socket.IO Works — Deep Dive 5 min

Part 4 — Ship It

9 Bonus Features — Typing, Online Users & Timestamps 5 min 10 Deploy to Railway, Troubleshooting & Summary 5 min

How this course is organized

Each lesson includes overview, steps, code, and interview tips
Use the sidebar on lesson pages to navigate
Content is original to Toolliyo—not copied from other sites

Begin first lesson Interview Q&A

Course quizzes

SQL & Databases — Interview Practice Exam React.js — Interview Practice Exam RAG-based Search System Project — Practice Quiz

Test your knowledge

Quizzes linked to this course—pass to earn certificates.

SQL & Databases — Interview Practice Exam

<p>Timed MCQ practice exam generated from <strong>SQL & Databases</strong> interview Q&amp…

Intermediate 48 min

React.js — Interview Practice Exam

<p>Timed MCQ practice exam generated from <strong>React.js</strong> interview Q&A. 40 …

Intermediate 48 min

RAG-based Search System Project — Practice Quiz

Test your understanding of RAG-based Search System Project. Retrieval-Augmented Generation…

Advanced 15 min

Prompt Engineering — Practice Quiz

Test your understanding of Prompt Engineering Tutorial. Write effective prompts for LLMs a…

Intermediate 15 min

Node.js — Interview Practice Exam

<p>Timed MCQ practice exam generated from <strong>Node.js</strong> interview Q&A. 40 q…

Intermediate 48 min

Multi-Agent System Project — Practice Quiz

Test your understanding of Multi-Agent System Project. Orchestrate multiple AI agents for …

Advanced 15 min

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