Welcome to the JavaScript Full Course for Beginners repository! 🎉
This repository contains all the source code, examples, and practice projects used in my JavaScript Web Development Series on YouTube. The series is designed for absolute beginners and gradually takes you from JavaScript fundamentals to modern ES6+ features, DOM manipulation, and real-world projects.
👉 YouTube Playlist: Learn JavaScript step-by-step with detailed explanations and hands-on demos. Playlist
- JavaScript fundamentals & syntax
- Variables, data types, and operators
- Conditions, loops, and functions
- Arrays & objects (deep dive)
- Scope, hoisting & execution flow
- DOM manipulation & events
- Forms handling & validation
- Local storage & JSON
- Asynchronous JavaScript (Promises, Fetch, async/await)
- Modern ES6+ features & clean code practices
- Mini projects & real-world apps
Each folder in this repository corresponds to a specific video in the series.
| S. No. | Main Topic | Sub-topics Included | Video Link |
|---|---|---|---|
| 1 | Introduction to JavaScript | What is JS, role in web development, how browser executes JS, JS engines (V8 etc.), where JS runs, how to add JS (internal/external), console intro | https://youtu.be/Y2MeNpxteGk |
| 2 | Variables, Data Types & Operators | var vs let vs const, primitive types, typeof, arithmetic, logical & comparison operators, expressions vs statements, best practices | https://youtu.be/JKPfM2AtgGw |
| 3 | Strings, Numbers & Math | String methods, template literals, escape characters, number handling, NaN, Infinity, Math object methods | https://youtu.be/KNNk0w7-rgw |
| 4 | Conditions, Switch & Ternary | if / else / else-if, nested conditions, truthy & falsy, switch case, fall-through, ternary operator with real examples | https://youtu.be/Sd83L3zM7qU |
| 5 | Loops (Complete Guide) | for, while, do-while, break, continue, loop flow, common mistakes, real-world use cases | https://youtu.be/cyfn7M43hvk |
| 6 | Arrays – Basics to Useful Methods | Creating arrays, indexing, length, push/pop/shift/unshift, splice vs slice, looping arrays | https://youtu.be/2_9Y02fXXps |
| 7 | Arrays – Modern Useful Methods | map, filter, reduce, forEach, find, some, every with real-world examples | https://youtu.be/i4joqbFqKuU |
| 8 | Functions (Complete Guide) | Function declaration, parameters & arguments, return, default parameters, arrow functions, when to use which | https://youtu.be/jqRQfQNDJkM |
| 9 | Scope, Hoisting & Execution Flow | Global, local & block scope, lexical scope, hoisting, temporal dead zone, execution context basics | https://youtu.be/W7y1yQKYFBw |
| 10 | Objects (Beginner to Advanced) | Creating objects, properties & methods, dot vs bracket, nested objects, destructuring, spread operator, this basics | https://youtu.be/wLjzmXqRFs4 |
| 11 | DOM Introduction | What is DOM, document object, selecting elements, reading text & attributes, console DOM practice | https://youtu.be/Z4XJcFRRafc |
| 12 | DOM Manipulation (Practical) | Changing text, HTML & styles, classList, attributes, creating & removing elements, innerHTML vs textContent | https://youtu.be/5h5qye3RmdM |
| 13 | Events in JavaScript | Click, input & key events, event listeners, event object, inline vs addEventListener, best practices | https://youtu.be/INX7nV9EwRw |
| 14 | Forms Handling & Validation | Handling submit, preventDefault, input validation, error messages, UX best practices | https://youtu.be/7rJ3FAsjpHo |
| 15 | Timing & Interval Functions | setTimeout, setInterval, clearing intervals, timers & loading animations | https://youtu.be/QQAp-hJCH3E |
| 16 | Local Storage, Session Storage & JSON | Storing data in browser, JSON parse & stringify, theme & todo examples | https://youtu.be/79a7fp9uHmk |
| 17 | ES6+ Modern JavaScript Features | let/const recap, advanced arrow functions, spread, rest, destructuring, template literals, shorthand syntax | https://youtu.be/UexqwZxhmBA |
| 18 | Modules in JavaScript | import/export, why modules, real folder structure, browser support | https://youtu.be/LXl0X7CfMYA |
| 19 | Asynchronous JavaScript Basics | Sync vs async, callbacks, callback issues, intro to promises | https://youtu.be/S28SK9LETyk |
| 20 | Promises, Fetch API & async/await | Promise chaining, fetch API, API calls, async/await, error handling | https://youtu.be/eVxiWcWQf-s |
| 21 | Error Handling & Debugging | try…catch, console tools, browser debugging, writing safe code | https://youtu.be/pVe3Dj_ZyE8 |
| 22 | Best Practices & Clean Code | Naming conventions, readable code, avoiding mistakes, optimization mindset | https://youtu.be/7CAkPN1IP50 |
| 23 | Calculator App | Arithmetic operations, edge cases (NaN, Infinity), dynamic result updates | https://youtu.be/5jGrRSg5vZk |
| 24 | Todo List with Local Storage | Create, edit, delete & persist todos after refresh | https://youtu.be/DerbZ7C_gmw |
| 25 | Understanding this Keyword (Deep Dive) |
this in global, functions, objects, events, arrow vs normal, call/apply/bind | https://youtu.be/PgSkKlHN27k |
| 26 | Closures | What is closure, how it works, lexical scope, real practical examples | https://youtu.be/K90P6R_wajY |
- Clone the repository:
git clone https://github.com/jdcodebase/js-series- Open any lesson folder.
- Open the
.htmlfile in your browser. - Read and edit the linked
.jsfile. - Practice along with the corresponding YouTube video.
- Absolute beginners in JavaScript
- Students learning frontend development
- Developers strengthening JS fundamentals
- Interview preparation for JavaScript concepts
If this series helps you:
- ⭐ Star this repository
- 👍 Like the videos
- 💬 Ask questions in the comments
- 🔔 Subscribe to JDCodebase on YouTube
After JavaScript, continue with:
- React.js
- MERN Stack Projects
- Advanced Frontend Concepts
Happy Coding! ⚡🚀
— JDCodebase