CodeYourFuture · shehu-dona · Jul 29, 2026 · Jul 29, 2026 · Jul 29, 2026 · Aug 2, 2026
diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
@@ -1,12 +1,9 @@
 <!DOCTYPE html>
 <html>
   <head>
-    <title> </title>
-    <meta
-      charset="utf-8"
-      name="viewport"
-      content="width=device-width, initial-scale=1.0"
-    />
+    <meta charset="utf-8" />
+    <title>Book Library</title>
+    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
     <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 +28,15 @@ <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 +48,7 @@ <h1>Library</h1>
           class="form-control"
           id="pages"
           name="pages"
+          min="1"
           required
         />
         <label class="form-check-label">
@@ -61,15 +59,11 @@ <h1>Library</h1>
             value=""
           />Read
         </label>
-        <input
-          type="submit"
-          value="Submit"
-          class="btn btn-primary"
-          onclick="submit();"
-        />
+        <button type="button" id="submitBtn" class="btn btn-primary">
+          Submit
+        </button>
       </div>
     </div>
-
     <table class="table" id="display">
       <thead class="thead-dark">
         <tr>
@@ -80,17 +74,9 @@ <h1>Library</h1>
           <th></th>
         </tr>
       </thead>
-      <tbody>
-        <tr>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-          <td></td>
-        </tr>
-      </tbody>
+      <tbody id="displayBody"></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
@@ -1,46 +1,38 @@
-let myLibrary = [];
-
-window.addEventListener("load", function (e) {
-  populateStorage();
-  render();
-});
+const myLibrary = [];
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const checkInput = document.getElementById("check");
 
 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
+  if (myLibrary.length === 0) {
+    myLibrary.push(new Book("Robison Crusoe", "Daniel Defoe", 252, true));
+    myLibrary.push(
+      new Book("The Old Man and the Sea", "Ernest Hemingway", 127, true)
     );
-    myLibrary.push(book1);
-    myLibrary.push(book2);
-    render();
   }
 }
 
-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
 function submit() {
-  if (
-    title.value == null ||
-    title.value == "" ||
-    pages.value == null ||
-    pages.value == ""
-  ) {
-    alert("Please fill all fields!");
-    return false;
-  } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
-    render();
+  const titleVal = titleInput.value.trim();
+  const authorVal = authorInput.value.trim();
+  const pagesVal = Number(pagesInput.value);
+
+  if (!titleVal || pagesVal <= 0 || !Number.isInteger(pagesVal)) {
+    alert("Please fill all fields with valid values!");
+    return;
   }
+
+  const book = new Book(titleVal, authorVal, pagesVal, checkInput.checked);
+  myLibrary.push(book);
+  render();
+
+  titleInput.value = "";
+  authorInput.value = "";
+  pagesInput.value = "";
+  checkInput.checked = false;
 }
 
 function Book(title, author, pages, check) {
@@ -51,53 +43,59 @@ function Book(title, author, pages, check) {
 }
 
 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);
-  }
+  const tbody = document.getElementById("displayBody");
+  tbody.innerHTML = "";
+
   //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;
+  for (let i = 0; i < myLibrary.length; i++) {
+    const book = myLibrary[i];
+    const row = tbody.insertRow();
 
-    //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;
+    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);
+    titleCell.textContent = book.title;
+    authorCell.textContent = book.author;
+    pagesCell.textContent = book.pages;
 
-    changeBut.addEventListener("click", function () {
-      myLibrary[i].check = !myLibrary[i].check;
+    //add and wait for action for read/unread button
+    const markReadButton = document.createElement("button");
+    markReadButton.className = "btn btn-success";
+    markReadButton.textContent = book.check ? "Yes" : "No";
+    markReadButton.addEventListener("click", function () {
+      book.check = !book.check;
       render();
     });
 
+    wasReadCell.appendChild(markReadButton);
+
     //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}`);
+    const deleteButton = document.createElement("button");
+    deleteButton.className = "btn btn-warning";
+    deleteButton.textContent = "Delete";
+    deleteButton.addEventListener("click", function () {
+      const deletedTitle = book.title;
       myLibrary.splice(i, 1);
       render();
+      showMessage(`You've deleted title: ${deletedTitle}`);
     });
+    deleteCell.appendChild(deleteButton);
   }
 }
+
+function showMessage(text) {
+  const msgDiv = document.createElement("div");
+  msgDiv.className = "alert alert-info";
+  msgDiv.textContent = text;
+  document.body.insertBefore(msgDiv, document.getElementById("display"));
+  setTimeout(() => msgDiv.remove(), 3000);
+}
+
+window.addEventListener("load", function (e) {
+  populateStorage();
+  render();
+});
+
+document.getElementById("submitBtn").addEventListener("click", submit);
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: start;
   padding-left: 20px;
 }