Welcome to the Learn JavaScript repository – your ultimate JavaScript roadmap designed for beginners, intermediates, and aspiring developers! This repo is your go-to resource for mastering JavaScript through hands-on examples, real-world interview prep, visual diagrams (Mermaid), and detailed explanations.
📌 Whether you're just starting out or preparing for technical interviews, this repository will help you understand, implement, and master core JavaScript concepts with clarity.
✅ Beginner to Advanced Concepts
✅ Code Examples + Syntax Highlighting
✅ Mermaid Diagrams for Visual Learning
✅ Real-life Use Cases & Interview Questions
✅ Clear Explanations with Code & Output
✅ Regular Updates
✅ Easy-to-Navigate Table of Contents
✅ Learn-by-Doing Projects (Coming Soon)
Each topic will be divided into:
✅ Concept + Explanation
✅ Syntax & Examples
✅ Real-life Scenarios
✅ Mermaid Diagrams (where applicable)
✅ Interview Q&A
✅ Tips & Best Practices
- Introduction to JavaScript
- Variables & Data Types
- Operators
- Control Flow – If/Else, Switch
- Loops – for, while, do-while
- Functions & Scope
- Arrays & Array Methods
- Objects & Object Methods
- Classes & OOP
- Inheritance & Prototypes
- ES6+ Features
- Modules (import/export)
- Asynchronous JavaScript (Callbacks, Promises)
- Async/Await
- JavaScript Event Loop & Call Stack
- Closures
- Hoisting
- This Keyword
- Memory Management & Garbage Collection
- JavaScript in the Browser (DOM)
- Error Handling (try/catch)
- Common Interview Questions
- Code Snippets for Interviews
- Mini Challenges
- JavaScript Projects (coming soon)
We include diagrams to explain complex topics such as:
- Call Stack
- Event Loop
- Promise Chains
- Prototypal Inheritance
- Execution Context & Scope Chain
graph TD
A[JavaScript Engine] --> B[Memory Heap]
A --> C[Call Stack]
C --> D[Web APIs]
D --> E[Callback Queue]
E --> C
All content in this repository is copyright © Ajay Dhangar. Feel free to fork, clone, or star, but do not copy content for commercial use without permission.
If this repo helps you, please consider:
🌟 Starring this repository 🔁 Sharing it with your friends 👣 Following me on GitHub 💼 Connect with me on LinkedIn 🌍 Connect with my website on CodeHarborHub
Dive into the 01-introduction folder and start your JavaScript journey today!
Keep learning, keep building. JavaScript mastery begins here! 💪