← Business 🛒

Product Page with Shopping Cart

A real product grid with an add-to-cart flow, quantity controls, and a persistent cart -- no checkout scam required.

🟡 MediumDifficulty

3-4 hoursTime

Python, JavaScript, TypeScriptLanguages

What you're building

You're building the core shopping experience behind every e-commerce site: a product grid, an 'Add to Cart' flow, a slide-out cart panel with quantity controls and a running total, all saved to localStorage so the cart survives a page refresh. There's no real payment processing (that needs a backend and real money), but every bit of the client-side cart logic is fully real and functional.

What you'll unlock 🔓

localStorageCart state managementEvent delegation

You'll need

Basic JavaScript
Arrays and objects
A browser

🗺️ Build roadmap

01 Build the product grid → 02 Add an Add to Cart button per product → 03 Build the slide-out cart panel → 04 Track cart state in an array with quantities → 05 Wire up quantity increment/decrement and removal → 06 Calculate and display the cart total live → 07 Persist the cart to localStorage → 08 Add a cart item-count badge

🔒

Log in to start building

Your first project is free -- create an account to unlock it.