Build an Add to Cart System with JavaScript | Real E-Commerce Project

Build a real Add to Cart & Shopping Cart system using HTML, CSS & Vanilla JavaScript. This project covers quantity update, subtotal calculation, dynamic UI, and responsive design. 👉 Perfect frontend portfolio project for beginners to advanced developers. 🧠 What You’ll Build In this project, you’ll create a fully functional e-commerce Add to Cart system featuring: Dynamic product listing Add / remove items from cart Quantity increase & decrease Live subtotal & cart count Responsive checkout UI This is not a toy project — it reflects real shopping cart logic. 🎯 Why This Project Is Important Shopping cart functionality is one of the most common frontend interview tasks. This project demonstrates: State management without frameworks DOM manipulation at scale Business logic implementation in JavaScript ⏱️ Chapters (Outcome-Based) 00:00 Intro 00:27 Live Demo 01:58 Project Setup 03:02 Layout & Header 07:33 Product Data & Rendering 17:34 Add to Cart Logic 19:37 Checkout Cart UI 25:31 Cart Update & Reload Logic 30:51 Quantity & Subtotal Calculation 37:03 Responsive Design 38:57 Testing & Outro 📚 Recommended Playlists 🔥 52 JavaScript Projects (Beginner → Advanced) https://www.youtube.com/playlist?list=PL8ZDj6xPX-1WGQo0acQLrdDzfCTEgfyXt 🎨 Animations with HTML, CSS & JS https://www.youtube.com/playlist?list=PL8ZDj6xPX-1V8UqfxzGJOw_uIrLHIgo-L 🌐 JavaScript API Projects https://www.youtube.com/playlist?list=PL8ZDj6xPX-1V2ymMI38b9S_njR4HTuXoC 💼 Responsive Portfolio Website https://www.youtube.com/playlist?list=PL8ZDj6xPX-1VMOyYutH3z8_SFia81WCWd 📂 Check out the source code for this project on GitHub! 👉 [https://github.com/codehuntersharath/52-Weeks-of-52-Projects-in-JavaScript-One-Project-Every-Week/tree/main/Week%2025%20-%20Building%20an%20Interactive%20Add%20To%20Cart%20Feature%20Using%20HTML%2C%20CSS%2C%20and%20JavaScript] If you find this project helpful in your JavaScript learning, make sure to ⭐ star the repository to show your support! Thank you for watching and don't forget to like, comment, Share, subscribe, and hit the notification bell to stay updated with our latest tutorials. Have a Feedback, Question or Project idea? Let me know about it in the comment box down below. If you learn something from this video then Please subscribe and Follow me: ► Subscribe : https://www.youtube.com/@codehuntersharath?sub_confirmation=1 ► Instagram : https://www.instagram.com/sharathchandark/ ► Twitter : https://twitter.com/sharathchandark All Copyrights and All Code in the Video is my own - by #SharathchandarK #codehuntersharath