Update menu.js - Streamline add cart process (#16)

Modified the existing code to store the saved items in an array to
streamline the process @Anjaliavv51
#5

menu.js

@@ -8,9 +8,16 @@ document.addEventListener('DOMContentLoaded', function () {
  var itemName = item.querySelector('h3').textContent;
  var itemPrice = item.querySelector('p').textContent;
  alert("Item added to cart successfully");
+
+ // Retrieve existing cart items from localStorage
+ var cartItems = JSON.parse(localStorage.getItem('cartItems')) || [];
+
+ // Add new item to the cart array
+ var newItem = { name: itemName, price: itemPrice };
+ cartItems.push(newItem);
 
- localStorage.setItem('itemName', itemName);
- localStorage.setItem('itemPrice', itemPrice);
+ // Save updated cart back to localStorage
+ localStorage.setItem('cartItems', JSON.stringify(cartItems));
 
  window.location.href = "cart.html";
  }