CodeYourFuture · AdnaanA · Dec 7, 2025 · Dec 9, 2025 · Dec 9, 2025 · Dec 10, 2025
diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
@@ -1,19 +1,22 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
   <head>
-    <title> </title>
+    <meta charset="utf-8" />
     <meta
-      charset="utf-8"
       name="viewport"
       content="width=device-width, initial-scale=1.0"
     />
+    <title>My Library</title>
+
+    <!-- jQuery, Popper, Bootstrap -->
     <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>
     <link
       rel="stylesheet"
       href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
     />
+
     <link rel="stylesheet" type="text/css" href="style.css" />
   </head>
 
@@ -23,71 +26,66 @@ <h1>Library</h1>
       <p>Add books to your virtual library</p>
     </div>
 
-    <button data-toggle="collapse" data-target="#demo" class="btn btn-info">
+    <button data-toggle="collapse" data-target="#demo" class="btn btn-info mb-3">
       Add new book
     </button>
 
     <div id="demo" class="collapse">
-      <div class="form-group">
-        <label for="title">Title:</label>
+      <form id="bookForm" class="form-group">
+        <label for="book-title">Book title:</label>
         <input
-          type="title"
+          type="text"
           class="form-control"
-          id="title"
-          name="title"
+          id="book-title"
+          name="book-title"
           required
         />
-        <label for="author">Author: </label>
+
+        <label for="author" class="mt-2">Author:</label>
         <input
-          type="author"
+          type="text"
           class="form-control"
           id="author"
           name="author"
           required
         />
-        <label for="pages">Pages:</label>
+
+        <label for="pages" class="mt-2">Pages:</label>
         <input
           type="number"
           class="form-control"
           id="pages"
           name="pages"
           required
         />
-        <label class="form-check-label">
+
+        <div class="form-check mt-2">
           <input
             type="checkbox"
             class="form-check-input"
             id="check"
-            value=""
-          />Read
-        </label>
-        <input
-          type="submit"
-          value="Submit"
-          class="btn btn-primary"
-          onclick="submit();"
-        />
-      </div>
+          />
+          <label class="form-check-label" for="check">Read</label>
+        </div>
+
+        <button id="addBookBtn" type="button" class="btn btn-primary mt-3">
+          Add Book
+        </button>
+      </form>
     </div>
 
-    <table class="table" id="display">
+    <table class="table mt-4" id="display">
       <thead class="thead-dark">
         <tr>
           <th>Title</th>
           <th>Author</th>
-          <th>Number of Pages</th>
+          <th>Pages</th>
           <th>Read</th>
           <th></th>
         </tr>
       </thead>
       <tbody>
-        <tr>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-        </tr>
+        <!-- rows inserted by JS -->
       </tbody>
     </table>
 

diff --git a/debugging/book-library/readme.md b/debugging/book-library/readme.md
@@ -12,12 +12,12 @@ My website should be able to:
 
 ## Bugs to be fixed
 
-1. Website loads but doesn't show any books
-2. Error in console when you try to add a book
-3. It uses the title name as the author name
-4. Delete button is broken
-5. When I add a book that I say I've read - it saves the wrong answer
+1. Website loads but doesn't show any books. Done
+2. Error in console when you try to add a book. Done
+3. It uses the title name as the author name. Done
+4. Delete button is broken. Done
+5. When I add a book that I say I've read - it saves the wrong answer. Done
 
-I think there are other some other small bugs in my code...but I'm lazy so I can't fix them all.
+I think there are some other small bugs in my code...but I'm lazy so I can't fix them all.
 
 I wish somebody would help me!
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
@@ -1,103 +1,105 @@
 let myLibrary = [];
 
-window.addEventListener("load", function (e) {
+window.addEventListener("load", function () {
   populateStorage();
   render();
+
+  // changed from form submit to button click
+  document.getElementById("addBookBtn").addEventListener("click", addBook);
 });
 
 function populateStorage() {
-  if (myLibrary.length == 0) {
-    let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
-    let book2 = new Book(
-      "The Old Man and the Sea",
-      "Ernest Hemingway",
-      "127",
-      true
-    );
-    myLibrary.push(book1);
-    myLibrary.push(book2);
-    render();
+  if (myLibrary.length === 0) {
+    myLibrary.push(new Book("Robinson Crusoe", "Daniel Defoe", 252, true));
+    myLibrary.push(new Book("The Old Man and the Sea", "Ernest Hemingway", 127, true));
   }
 }
 
-const title = document.getElementById("title");
+const bookTitle = document.getElementById("book-title");
 const author = document.getElementById("author");
 const pages = document.getElementById("pages");
 const check = document.getElementById("check");
 
-//check the right input from forms and if its ok -> add the new book (object in array)
-//via Book function and start render function
-function submit() {
-  if (
-    title.value == null ||
-    title.value == "" ||
-    pages.value == null ||
-    pages.value == ""
-  ) {
+// renamed so we don’t conflict with form.submit()
+function addBook() {
+  // Get and sanitize values once
+  const titleValue = bookTitle.value.trim();
+  const authorValue = author.value.trim();
+  const pagesValue = pages.value.trim();
+  const isRead = check.checked;
+
+  // Basic empty validation
+  if (!titleValue || !authorValue || !pagesValue) {
     alert("Please fill all fields!");
-    return false;
-  } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
-    render();
+    return;
   }
+
+  // Validate page number properly
+  const pagesNumber = Number(pagesValue);
+  if (!Number.isInteger(pagesNumber) || pagesNumber <= 0) {
+    alert("Please enter a valid positive page count!");
+    return;
+  }
+
+  // Create the book with sanitized values
+  const book = new Book(titleValue, authorValue, pagesNumber, isRead);
+
+  // Save to library
+  myLibrary.push(book);
+
+  // Re-render UI
+  render();
 }
 
-function Book(title, author, pages, check) {
-  this.title = title;
-  this.author = author;
-  this.pages = pages;
-  this.check = check;
+function Book(titleValue, authorValue, pagesNumber, isRead) {
+  this.bookTitle = titleValue;
+  this.author = authorValue;
+  this.pages = pagesNumber;
+  this.check = isRead;
 }
 
+
 function render() {
-  let table = document.getElementById("display");
-  let rowsNumber = table.rows.length;
-  //delete old table
-  for (let n = rowsNumber - 1; n > 0; n-- {
-    table.deleteRow(n);
-  }
-  //insert updated row and cells
-  let length = myLibrary.length;
-  for (let i = 0; i < length; i++) {
-    let row = table.insertRow(1);
-    let titleCell = row.insertCell(0);
-    let authorCell = row.insertCell(1);
-    let pagesCell = row.insertCell(2);
-    let wasReadCell = row.insertCell(3);
-    let deleteCell = row.insertCell(4);
-    titleCell.innerHTML = myLibrary[i].title;
-    authorCell.innerHTML = myLibrary[i].author;
-    pagesCell.innerHTML = myLibrary[i].pages;
-
-    //add and wait for action for read/unread button
-    let changeBut = document.createElement("button");
-    changeBut.id = i;
+  const table = document.getElementById("display");
+  const tbody = table.querySelector("tbody");
+  tbody.innerHTML = ""; // clear previous rows
+
+  myLibrary.forEach((book, i) => {
+    const row = tbody.insertRow();
+
+    // Create ALL CELLS first (like original code)
+    const titleCell = row.insertCell(0);
+    const authorCell = row.insertCell(1);
+    const pagesCell = row.insertCell(2);
+    const wasReadCell = row.insertCell(3);
+    const deleteCell = row.insertCell(4);
+
+    // Fill text cells
+    titleCell.textContent = book.bookTitle;
+    authorCell.textContent = book.author;
+    pagesCell.textContent = book.pages;
+
+    // --- Read/Unread Button ---
+    const changeBut = document.createElement("button");
     changeBut.className = "btn btn-success";
+    changeBut.textContent = book.check ? "Yes" : "No";
     wasReadCell.appendChild(changeBut);
-    let readStatus = "";
-    if (myLibrary[i].check == false) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.innerText = readStatus;
-
-    changeBut.addEventListener("click", function () {
-      myLibrary[i].check = !myLibrary[i].check;
+
+    changeBut.addEventListener("click", () => {
+      book.check = !book.check;
       render();
     });
 
-    //add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delBut.id = i + 5;
-    deleteCell.appendChild(delBut);
+    // --- Delete Button ---
+    const delBut = document.createElement("button");
     delBut.className = "btn btn-warning";
-    delBut.innerHTML = "Delete";
-    delBut.addEventListener("clicks", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+    delBut.textContent = "Delete";
+    deleteCell.appendChild(delBut);
+
+    delBut.addEventListener("click", () => {
+      alert(`You've deleted: ${book.bookTitle}`);
       myLibrary.splice(i, 1);
       render();
     });
-  }
+  });
 }
diff --git a/debugging/book-library/style.css b/debugging/book-library/style.css
@@ -17,3 +17,9 @@
 button.btn-info {
   margin: 20px;
 }
+
+@media (min-width: 576px) {
+  .jumbotron {
+      padding: 2rem 32px 2rem; 
+  }
+}