07_js-debug/uebungen/u10_einkaufspreis/index.html

@@ -5,7 +5,7 @@
     <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <title>Übung 10: Einkaufspreis</title>
     <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.8/dist/css/bootstrap.min.css" rel="stylesheet" />
-    <script src="index.js" defer></script>
+    <script src="solution.js" defer></script>
   </head>
   <body>
     <main>

07_js-debug/uebungen/u10_einkaufspreis/solution.js

@@ -0,0 +1,51 @@
+function calculateTotalPrice(items = []) {
+  //   let total = 0;
+  // items.forEach((item) => {
+  //     total += item.price;
+  //   });
+  const total = items.reduce((sum, item) => {
+    // Ensure that item.price is a number
+    const price = typeof item.price === 'number' ? item.price : Number(item.price);
+
+    if (isNaN(price)) {
+      console.warn(`Invalid price for item "${item.name}". Skipping...`);
+      return sum;
+    }
+    return sum + Number(item.price);
+  }, 0);
+
+  return Number(total.toFixed(2));
+}
+
+const shoppingCart = [
+  { name: 'Laptop', price: 999.99 },
+  { name: 'Smartphone', price: 599.99 },
+  { name: 'Headphones', cost: 199.99 },
+];
+
+const totalPrice = calculateTotalPrice(shoppingCart);
+console.log('Total Price:', totalPrice);
+
+function displayUserProfile(user) {
+  console.log(`Name: ${user.name}`);
+  console.log(`Age: ${user.age}`);
+  console.log(`Email: ${user.email.toLowerCase()}`);
+}
+
+const userProfile = {
+  name: 'Sarah',
+  age: 'twenty-five',
+  email: 'SARAH@EXAMPLE.COM',
+};
+
+displayUserProfile(userProfile);
+
+function getFirstItemName(items) {
+  return items[0].name.toUpperCase();
+}
+
+console.log('First Item:', getFirstItemName(shoppingCart)); // => LAPTOP
+
+const numberList = [1, 2, 3, 4, 5];
+const sum = numberList.reduce((acc, num) => acc + Number(num), 0);
+console.log('Sum:', sum); // => 15