**Build React Shopping Cart UI with Redux Toolkit | React E-Commerce | Lesson 10**
In this 10th lesson of our React E-Commerce series, we build a fully functional Shopping Cart UI and integrate it with Redux Toolkit for state management. This is a critical part of the project where you’ll learn how to connect your UI to the central store to handle real-world shopping logic.
**What you will learn in this lesson:**
* How to use `useSelector` to pull dynamic data from the Redux store.
* The essential role of `useDispatch` in triggering cart actions.
* Mapping through state to display items in a responsive list.
* Implementing quantity controls (plus and minus buttons).
* Preventing duplicate items from being added to the cart.
* Handling empty cart states and conditional UI rendering.
* Calculating subtotals and total prices in real-time.
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### **Video Chapters**
00:00 – Introduction & Finished Cart Demo
00:41 – Setting up Cart Page & Redux Hooks (useSelector/useDispatch)
01:30 – Deep Dive: How Dispatch and Actions Work
02:54 – Handling Empty Cart States (Conditional Rendering)
04:42 – Implementing “Clear Cart” Functionality
05:10 – Mapping Cart State to the UI
06:40 – Removing Individual Items from the Cart
07:25 – Building Quantity Controls (+ & – Buttons)
08:44 – Real-time Cart Updates & Performance Check
09:55 – Connecting Product Details to Cart Logic
11:42 – Logic to Prevent Duplicate Item Entry
14:13 – Layout & Styling with CSS Grid and Modules
15:55 – “View Bag” vs. “Add to Cart” Button Toggle
18:20 – Creating the Order Summary Section
20:18 – Calculating Real-time Subtotals & Totals
22:20 – Empty Cart “Start Shopping” Navigation
24:38 – Redux Slice & Store Architecture Review
27:10 – Lesson 11 Preview: Firebase Authentication
27:52 – Conclusion & Community Questions
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**Resources & Links:**
* **Previous Lesson (Lesson 9):** [Save Your Cart! Redux Store Setup & LocalStorage Persistence](https://studio.youtube.com/video/Q6wIjX-8lTY)
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