From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

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Create a shopping cart

Create a shopping cart

From the course: Master React 19 and Next.js 16 with Hands-On Projects and Real-World Applications

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Create a shopping cart

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In this lesson, you'll learn to build an interactive shopping cart using React State. I'll guide you through each step, and by the end, you'll have a fully functional shopping cart application. Get ready to put your React State knowledge to the test! The app will let users add items to their cart. It will then display items in the cart and update the total cost. We will call the main component ShoppingCart. We will give it a Cart state, which will store the items in the cart and their corresponding quantities. We will also store item prices inside an object Prices. This is okay for a simple project like this, but normally you would get these using a back-end API. We will also create a function getTotal, which takes the cart state as an argument and calculates the total cost based on items in the cart. And finally, we will create a function addItem, which will be executed whenever the user adds an item to their cart. This function will update the cart state, which will re-render the…

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