CodeYourFuture · Iswanna · Dec 9, 2025 · Dec 9, 2025 · Dec 9, 2025 · Dec 9, 2025
diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
@@ -1,14 +1,9 @@
 <!doctype html>
 <html lang="en">
   <head>
-    <meta charset="utf-8">
+    <meta charset="utf-8" />
     <title>Library — Add books to your virtual library</title>
-    <meta name="viewport" content="width=device-width, initial-scale=1">
-
-    <!-- Dependencies -->
-    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
-    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
-    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
 
     <!-- Styles -->
     <link
@@ -24,7 +19,12 @@ <h1>Library</h1>
       <p>Add books to your virtual library</p>
     </div>
 
-    <button data-toggle="collapse" data-target="#demo" class="btn btn-info" type="button">
+    <button
+      data-toggle="collapse"
+      data-target="#demo"
+      class="btn btn-info"
+      type="button"
+    >
       Add new book
     </button>
 
@@ -70,11 +70,7 @@ <h1>Library</h1>
         </div>
 
         <!-- Explicit type="button" to avoid default form submission -->
-        <button
-          type="button"
-          class="btn btn-primary mt-3"
-          id="submitBtn"
-        >
+        <button type="button" class="btn btn-primary mt-3" id="submitBtn">
           Submit
         </button>
       </div>
@@ -93,7 +89,19 @@ <h1>Library</h1>
       <tbody></tbody>
     </table>
 
-    <!-- Load script at end of body; modules are deferred automatically -->
+    <!-- Designated notice container controlled via style.css -->
+    <div
+      id="alerts"
+      class="notice-root"
+      role="status"
+      aria-live="polite"
+      aria-atomic="true"
+    ></div>
+
+    <!-- Scripts loaded at end of body -->
+    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
+    <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.min.js"></script>
+    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.min.js"></script>
     <script src="script.js" type="module"></script>
   </body>
-</html>
+</html>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
@@ -15,7 +15,7 @@ window.addEventListener("load", function (e) {
 });
 
 function populateStorage() {
-  if (myLibrary.length == 0) {
+  if (myLibrary.length === 0) {
     let book1 = new Book("Robinson Crusoe", "Daniel Defoe", 252, true);
     let book2 = new Book(
       "The Old Man and the Sea",
@@ -33,40 +33,56 @@ const authorInput = document.getElementById("author");
 const pagesInput = document.getElementById("pages");
 const readCheckbox = document.getElementById("check");
 
-// Non-blocking success message (appears briefly and fades out)
+// Non-blocking success message using CSS animation; JS only toggles classes
 function showSuccess(message) {
+  const root = document.getElementById("alerts");
+  if (!root) return;
+
   const alertEl = document.createElement("div");
-  alertEl.className = "alert alert-success";
+  // Use Bootstrap alert styling + our notice classes
+  alertEl.className = "alert alert-success notice notice--auto-hide";
+  alertEl.setAttribute("role", "status");
   alertEl.textContent = message;
-  alertEl.style.position = "fixed";
-  alertEl.style.top = "1rem";
-  alertEl.style.right = "1rem";
-  alertEl.style.zIndex = "1050";
-  document.body.appendChild(alertEl);
-
-  setTimeout(() => {
-    alertEl.style.transition = "opacity 0.3s";
-    alertEl.style.opacity = "0";
-    setTimeout(() => alertEl.remove(), 300);
-  }, 2500);
+
+  // Remove the element after the CSS animation completes (no setTimeout)
+  alertEl.addEventListener(
+    "animationend",
+    () => {
+      alertEl.remove();
+    },
+    { once: true }
+  );
+
+  root.appendChild(alertEl);
 }
 
-//check the right input from forms and if its ok -> add the new book (object in array)
-//via Book function and start render function
+// Check the right input from forms and if it's ok -> add the new book (object in array)
+// via Book function and start render function
 function submit() {
   const title = titleInput.value.trim();
   const author = authorInput.value.trim();
-  const pages = Number(pagesInput.value);
 
   // Validate title and author
   if (title === "" || author === "") {
     alert("Title and author cannot be empty.");
     return;
   }
 
-  // Validate pages
-  if (Number.isNaN(pages) || pages <= 0) {
-    alert("Pages must be a positive number.");
+  // Read and validate pages as a positive integer
+  const pages = pagesInput.valueAsNumber;
+  const v = pagesInput.validity;
+
+  if (v.valueMissing || !Number.isFinite(pages)) {
+    alert("Pages is required and must be a number.");
+    return;
+  }
+  if (v.rangeUnderflow || pages < 1) {
+    alert("Pages must be at least 1.");
+    return;
+  }
+  // Enforce whole numbers only (reject decimals like 3.5)
+  if (v.stepMismatch || !Number.isInteger(pages)) {
+    alert("Pages must be a whole number.");
     return;
   }
 
@@ -103,7 +119,7 @@ function render() {
 
     titleCell.textContent = book.title;
     authorCell.textContent = book.author;
-    pagesCell.textContent = book.pages;
+    pagesCell.textContent = String(book.pages);
 
     // Read/unread toggle button
     const changeBut = document.createElement("button");

diff --git a/debugging/book-library/style.css b/debugging/book-library/style.css
@@ -17,3 +17,47 @@
 button.btn-info {
   margin: 20px;
 }
+
+/* --- Notices (toast) styles --- */
+
+/* Container to control placement of notices */
+.notice-root {
+  position: fixed;
+  top: 1rem;
+  right: 1rem;
+  z-index: 1050;
+  display: flex;
+  flex-direction: column;
+  gap: 0.5rem;
+  pointer-events: none; /* allow clicks to pass through container */
+}
+
+/* Each notice uses Bootstrap alert styles, plus these */
+.notice {
+  pointer-events: auto; /* allow focus/click on the notice itself if needed */
+}
+
+/* Pure-CSS lifecycle: fade in, hold, fade out */
+@keyframes notice-life {
+  0% {
+    opacity: 0;
+    transform: translateY(-6px);
+  }
+  10% {
+    opacity: 1;
+    transform: translateY(0);
+  }
+  85% {
+    opacity: 1;
+    transform: translateY(0);
+  }
+  100% {
+    opacity: 0;
+    transform: translateY(-6px);
+  }
+}
+
+/* Apply the animation */
+.notice--auto-hide {
+  animation: notice-life 2500ms ease-in-out forwards;
+}