CodeYourFuture · russom-g · Aug 4, 2026 · Aug 5, 2026 · Aug 5, 2026 · Aug 5, 2026
diff --git a/.gitignore b/.gitignore
diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
@@ -1,20 +1,17 @@
-<!DOCTYPE html>
-<html>
+<!doctype html>
+<html lang="en">
  <head>
- <title> </title>
- <meta
- charset="utf-8"
- name="viewport"
- content="width=device-width, initial-scale=1.0"
- />
+ <title>Book Library</title>
+ <meta charset="utf-8">
+ <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>
  <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" />
+ href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
+<link rel="stylesheet" type="text/css" href="style.css">
+ <script src="script.js" type="module"></script>
  </head>
 
  <body>
@@ -31,45 +28,47 @@ <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"
  required
-/>
+ >
  <label for="pages">Pages:</label>
  <input
  type="number"
  class="form-control"
  id="pages"
  name="pages"
+ min="1"
  required
-/>
+ >
  <label class="form-check-label">
  <input
  type="checkbox"
  class="form-check-input"
  id="check"
- value=""
-/>Read
+>
+ Read
  </label>
- <input
- type="submit"
- value="Submit"
+ <button
+ type="button"
  class="btn btn-primary"
- onclick="submit();"
- />
- </div>
- </div>
-
+ id="add-book"
+ >
+ Submit
+ </button>
+ </div>
+ </div>
+ <div id="message"></div>
  <table class="table" id="display">
  <thead class="thead-dark">
  <tr>
@@ -80,17 +79,7 @@ <h1>Library</h1>
  <th></th>
  </tr>
  </thead>
- <tbody>
- <tr>
- <td></td>
- <td></td>
- <td></td>
- <td></td>
- <td></td>
- </tr>
- </tbody>
+ <tbody id="book-list"></tbody>
  </table>
-
- <script src="script.js"></script>
  </body>
 </html>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
@@ -1,103 +1,92 @@
-let myLibrary = [];
+const myLibrary = [];
 
-window.addEventListener("load", function (e) {
- populateStorage();
- render();
-});
-
-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
+function Book(title, author, pages, wasRead) {
+ this.title = title;
+ this.author = author;
+ this.pages = pages;
+ this.wasRead = wasRead;
+}
+
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const readInput = document.getElementById("check");
+const message = document.getElementById("message");
+const bookList = document.getElementById("book-list");
+const addBookButton = document.getElementById("add-book");
+
+function addDefaultBooks() {
+ 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)
  );
- 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 == ""
- ) {
+function addBook() {
+ const title = titleInput.value.trim();
+ const author = authorInput.value.trim();
+ const pages = Number(pagesInput.value);
+
+ if (!title || !author || !pagesInput.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();
+ return;
  }
-}
-
-function Book(title, author, pages, check) {
- this.title = title;
- this.author = author;
- this.pages = pages;
- this.check = check;
+ if (isNaN(pages) || pages <= 0) {
+ alert("Pages must be a valid number!");
+ return;
+ }
+ myLibrary.push(new Book(title, author, pages, readInput.checked));
+ render();
 }
 
 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;
+ bookList.innerHTML = "";
+
+ for (let i = 0; i < myLibrary.length; i++) {
+ const row = bookList.insertRow();
+
+ 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 = myLibrary[i].title;
+ authorCell.textContent = myLibrary[i].author;
+ pagesCell.textContent = 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;
+ const readButton = document.createElement("button");
+
+ readButton.className = "btn btn-success";
+ readButton.textContent = myLibrary[i].wasRead ? "Yes" : "No";
+
+ wasReadCell.appendChild(readButton);
+
+ readButton.addEventListener("click", function () {
+ myLibrary[i].wasRead = !myLibrary[i].wasRead;
  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}`);
+ const deleteButton = document.createElement("button");
+
+ deleteButton.className = "btn btn-warning";
+ deleteButton.textContent = "Delete";
+
+ deleteCell.appendChild(deleteButton);
+
+ deleteButton.addEventListener("click", function () {
+ const deleteTitle = myLibrary[i].title;
+
  myLibrary.splice(i, 1);
  render();
+ message.textContent = `You've deleted title: ${deleteTitle}`;
  });
  }
 }
+
+addDefaultBooks();
+render();
+addBookButton.addEventListener("click", addBook);
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;
+text-align: left;
  padding-left: 20px;
 }
 
@@ -11,7 +11,7 @@
 
 .form-check-label {
  padding-left: 20px;
- margin: 5px 0px 5px 0px;
+ margin: 5px 0;
 }
 
 button.btn-info {