CodeYourFuture · anosidium · Dec 12, 2025 · Dec 12, 2025 · Dec 12, 2025 · Dec 12, 2025
diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
@@ -1,12 +1,8 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
   <head>
-    <title> </title>
-    <meta
-      charset="utf-8"
-      name="viewport"
-      content="width=device-width, initial-scale=1.0"
-    />
+    <title>My Book Library</title>
+    <meta charset="utf-8" />
     <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>
@@ -31,15 +27,15 @@ <h1>Library</h1>
       <div class="form-group">
         <label for="title">Title:</label>
         <input
-          type="title"
+          type="text"
           class="form-control"
           id="title"
           name="title"
           required
         />
         <label for="author">Author: </label>
         <input
-          type="author"
+          type="text"
           class="form-control"
           id="author"
           name="author"
@@ -51,6 +47,8 @@ <h1>Library</h1>
           class="form-control"
           id="pages"
           name="pages"
+          min="1"
+          step="1"
           required
         />
         <label class="form-check-label">
@@ -65,7 +63,7 @@ <h1>Library</h1>
           type="submit"
           value="Submit"
           class="btn btn-primary"
-          onclick="submit();"
+          id="submit"
         />
       </div>
     </div>
@@ -80,17 +78,9 @@ <h1>Library</h1>
           <th></th>
         </tr>
       </thead>
-      <tbody>
-        <tr>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-        </tr>
-      </tbody>
+      <tbody></tbody>
     </table>
 
-    <script src="script.js"></script>
+    <script src="script.js" type="module"></script>
   </body>
 </html>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
@@ -1,17 +1,17 @@
-let myLibrary = [];
+const myLibrary = [];
 
 window.addEventListener("load", function (e) {
   populateStorage();
-  render();
+  document.getElementById("submit").addEventListener("click", submit);
 });
 
 function populateStorage() {
-  if (myLibrary.length == 0) {
-    let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
+  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",
+      127,
       true
     );
     myLibrary.push(book1);
@@ -20,84 +20,90 @@ function populateStorage() {
   }
 }
 
-const title = document.getElementById("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
+// 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 == ""
-  ) {
-    alert("Please fill all fields!");
+  const titleInput = document.getElementById("title");
+  const authorInput = document.getElementById("author");
+  const pagesInput = document.getElementById("pages");
+  const isReadInput = document.getElementById("check");
+
+  const titleValue = titleInput.value.trim();
+  const authorValue = authorInput.value.trim();
+  const pagesRaw = pagesInput.value.trim();
+  const pagesValue = Number(pagesRaw);
+
+  if (titleValue.length === 0 || authorValue.length === 0) {
+    alert("Title or author cannot be blank!");
+    return false;
+  } else if (!Number.isInteger(pagesValue) || pagesRaw < 1) {
+    alert("Pages must be a positive whole number!");
     return false;
   } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    let book = new Book(
+      titleValue,
+      authorValue,
+      pagesValue,
+      isReadInput.checked
+    );
+
+    myLibrary.push(book);
     render();
   }
 }
 
-function Book(title, author, pages, check) {
+function Book(title, author, pages, isRead) {
   this.title = title;
   this.author = author;
   this.pages = pages;
-  this.check = check;
+  this.isRead = 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
+  const tableBody = table.querySelector("tbody");
+
+  // Delete old table
+  if (!tableBody) return;
+  tableBody.innerHTML = "";
+
+  // Insert updated row and cells
   let length = myLibrary.length;
+
   for (let i = 0; i < length; i++) {
-    let row = table.insertRow(1);
+    let row = tableBody.insertRow(0);
     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;
-    changeBut.className = "btn btn-success";
-    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;
+
+    titleCell.textContent = myLibrary[i].title;
+    authorCell.textContent = myLibrary[i].author;
+    pagesCell.textContent = myLibrary[i].pages;
+
+    // Add and wait for action for read/unread button
+    let changeButton = document.createElement("button");
+    changeButton.className = "btn btn-success";
+    wasReadCell.appendChild(changeButton);
+    changeButton.innerText = myLibrary[i].isRead ? "Yes" : "No";
+
+    changeButton.addEventListener("click", function () {
+      myLibrary[i].isRead = !myLibrary[i].isRead;
       render();
     });
 
-    //add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delBut.id = i + 5;
-    deleteCell.appendChild(delBut);
-    delBut.className = "btn btn-warning";
-    delBut.innerHTML = "Delete";
-    delBut.addEventListener("clicks", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+    // Add delete button to every row and render again
+    let deleteButton = document.createElement("button");
+    deleteCell.appendChild(deleteButton);
+    deleteButton.className = "btn btn-warning";
+    deleteButton.textContent = "Delete";
+
+    deleteButton.addEventListener("click", function () {
+      const bookTitle = myLibrary[i].title;
       myLibrary.splice(i, 1);
       render();
+      alert(`You've deleted title: ${bookTitle}`);
     });
   }
 }
diff --git a/debugging/book-library/style.css b/debugging/book-library/style.css
@@ -1,7 +1,7 @@
 .form-group {
   width: 400px;
   height: 300px;
-  align-self: left;
+  align-self: flex-start;
   padding-left: 20px;
 }