From 580571e223e1ceede80f0186158aa7c3e8a082ee Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Sat, 15 Aug 2026 04:08:31 +0100
Subject: [PATCH 1/9] adding missing parenthesis at line 57

---
 debugging/book-library/script.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d3..eed706fdc 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -54,7 +54,7 @@ function render() {
   let table = document.getElementById("display");
   let rowsNumber = table.rows.length;
   //delete old table
-  for (let n = rowsNumber - 1; n > 0; n-- {
+  for (let n = rowsNumber - 1; n > 0; n--) {
     table.deleteRow(n);
   }
   //insert updated row and cells

From 1c3aa6758a27b3a77ea291693f0797fd9a422cfc Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Sat, 15 Aug 2026 04:16:30 +0100
Subject: [PATCH 2/9] Fixed issues in the submit() function that prevented new
 books from being added correctly.

---
 debugging/book-library/script.js | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index eed706fdc..3c1e32d24 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -29,20 +29,20 @@ const check = document.getElementById("check");
 //via Book function and start render function
 function submit() {
   if (
-    title.value == null ||
     title.value == "" ||
-    pages.value == null ||
+    author.value == "" ||
     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();
+    return;
   }
+
+  let book = new Book(title.value, author.value, pages.value, check.checked);
+  myLibrary.push(book);
+  render();
 }
 
+
 function Book(title, author, pages, check) {
   this.title = title;
   this.author = author;

From c9da8fd4034f6e05e586442304e64957afe8c279 Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Sat, 15 Aug 2026 04:24:47 +0100
Subject: [PATCH 3/9] Corrected the read/unread display logic and fixed the
 broken delete button in the library table

---
 debugging/book-library/script.js | 23 ++++++++++-------------
 1 file changed, 10 insertions(+), 13 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 3c1e32d24..c412f12a1 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -28,11 +28,7 @@ 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 == "" ||
-    author.value == "" ||
-    pages.value == ""
-  ) {
+  if (title.value == "" || author.value == "" || pages.value == "") {
     alert("Please fill all fields!");
     return;
   }
@@ -42,7 +38,6 @@ function submit() {
   render();
 }
 
-
 function Book(title, author, pages, check) {
   this.title = title;
   this.author = author;
@@ -76,11 +71,12 @@ function render() {
     changeBut.className = "btn btn-success";
     wasReadCell.appendChild(changeBut);
     let readStatus = "";
-    if (myLibrary[i].check == false) {
+    if (myLibrary[i].check == true) {
       readStatus = "Yes";
     } else {
       readStatus = "No";
     }
+
     changeBut.innerText = readStatus;
 
     changeBut.addEventListener("click", function () {
@@ -88,13 +84,14 @@ function render() {
       render();
     });
 
-    //add delete button to every row and render again
+    // 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 () {
+    delButton.id = i + 5;
+    deleteCell.appendChild(delButton);
+    delButton.className = "btn btn-warning";
+    delButton.innerHTML = "Delete";
+
+    delButton.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();

From dd59bc5421cc9e3c9d2628418bdf8056fa77cbfe Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Sat, 15 Aug 2026 16:19:09 +0100
Subject: [PATCH 4/9] Making error fix based from HTML validation checker

---
 debugging/book-library/index.html | 22 ++++++++++------------
 debugging/book-library/script.js  |  3 ++-
 2 files changed, 12 insertions(+), 13 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71e..4885ed88a 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,12 +1,10 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
   <head>
-    <title> </title>
-    <meta
-      charset="utf-8"
-      name="viewport"
-      content="width=device-width, initial-scale=1.0"
-    />
+    <title>Online 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>
@@ -31,19 +29,19 @@ <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
@@ -51,7 +49,7 @@ <h1>Library</h1>
           class="form-control"
           id="pages"
           name="pages"
-          required
+         
         />
         <label class="form-check-label">
           <input
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index c412f12a1..cf412f9df 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -71,11 +71,12 @@ function render() {
     changeBut.className = "btn btn-success";
     wasReadCell.appendChild(changeBut);
     let readStatus = "";
-    if (myLibrary[i].check == true) {
+    if (myLibrary[i].check ) {
       readStatus = "Yes";
     } else {
       readStatus = "No";
     }
+    // myLibrary[i].check ? readStatus = "Yes" : readStatus = "No";
 
     changeBut.innerText = readStatus;
 

From 73bab0aafb4b80cbb6580585dbffc3d780e8c600 Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Sun, 16 Aug 2026 04:46:29 +0100
Subject: [PATCH 5/9] Making change on HTML and JS code after validation check

---
 debugging/book-library/index.html |  43 +++++-----
 debugging/book-library/script.js  | 136 +++++++++++++++++-------------
 2 files changed, 100 insertions(+), 79 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 4885ed88a..66a6bb976 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,18 +1,21 @@
 <!DOCTYPE html>
 <html lang="en">
   <head>
-    <title>Online book library </title>
-    <meta  charset="utf-8"/>
-    <meta  name="viewport" content="width=device-width, initial-scale=1.0"/>
-    
+    <title>Online 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" />
+
+    <link rel="stylesheet" href="style.css" />
   </head>
 
   <body>
@@ -33,32 +36,37 @@ <h1>Library</h1>
           class="form-control"
           id="title"
           name="title"
-          
+          required
         />
-        <label for="author">Author: </label>
+
+        <label for="author">Author:</label>
         <input
           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"
@@ -78,17 +86,10 @@ <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>
   </body>
-</html>
+</html>
\ No newline at end of file
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index cf412f9df..2ef7dd495 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,40 +1,61 @@
 let myLibrary = [];
 
-window.addEventListener("load", function (e) {
+
+window.addEventListener("load", function () {
   populateStorage();
-  render();
 });
 
 function populateStorage() {
-  if (myLibrary.length == 0) {
-    let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
-    let book2 = new Book(
+  if (myLibrary.length === 0) {
+    const book1 = new Book(
+      "Robison Crusoe",
+      "Daniel Defoe",
+      252,
+      true
+    );
+
+    const book2 = new Book(
       "The Old Man and the Sea",
       "Ernest Hemingway",
-      "127",
+      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");
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const readCheckbox = 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 == "" || author.value == "" || pages.value == "") {
+  const titleValue = titleInput.value.trim();
+  const authorValue = authorInput.value.trim();
+  const pagesValue = Number(pagesInput.value);
+
+  if (
+    titleValue === "" ||
+    authorValue === "" ||
+    Number.isNaN(pagesValue)
+  ) {
     alert("Please fill all fields!");
     return;
   }
 
-  let book = new Book(title.value, author.value, pages.value, check.checked);
+  const book = new Book(
+    titleValue,
+    authorValue,
+    pagesValue,
+    readCheckbox.checked
+  );
+
   myLibrary.push(book);
+
   render();
 }
 
@@ -46,56 +67,55 @@ function Book(title, author, pages, check) {
 }
 
 function render() {
-  let table = document.getElementById("display");
-  let rowsNumber = table.rows.length;
-  //delete old table
+  const table = document.getElementById("display");
+
+  const rowsNumber = table.rows.length;
+
   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;
-    changeBut.className = "btn btn-success";
-    wasReadCell.appendChild(changeBut);
-    let readStatus = "";
-    if (myLibrary[i].check ) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    // myLibrary[i].check ? readStatus = "Yes" : readStatus = "No";
-
-    changeBut.innerText = readStatus;
-
-    changeBut.addEventListener("click", function () {
+
+  for (let i = 0; i < myLibrary.length; i++) {
+    const row = table.insertRow(1);
+
+    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;
+
+    const readButton = document.createElement("button");
+    readButton.className = "btn btn-success";
+
+    const readStatus = myLibrary[i].check ? "Yes" : "No";
+
+    readButton.textContent = readStatus;
+
+    readButton.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;
       render();
     });
 
-    // add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delButton.id = i + 5;
-    deleteCell.appendChild(delButton);
-    delButton.className = "btn btn-warning";
-    delButton.innerHTML = "Delete";
+    wasReadCell.appendChild(readButton);
 
-    delButton.addEventListener("click", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
-      myLibrary.splice(i, 1);
-      render();
-    });
+    const deleteButton = document.createElement("button");
+
+    deleteButton.className = "btn btn-warning";
+    deleteButton.textContent = "Delete";
+
+    deleteButton.addEventListener("click", function () {
+  const deletedTitle = myLibrary[i].title;
+
+  myLibrary.splice(i, 1);
+  render();
+
+  alert(`Deleted: ${deletedTitle}`);
+});
+
+    deleteCell.appendChild(deleteButton);
   }
-}
+}
\ No newline at end of file

From 0d58a53069f8341e3e024a0243912211573528ab Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Mon, 17 Aug 2026 02:14:54 +0100
Subject: [PATCH 6/9] Fix review comments #3 and #6

Use const for myLibrary and improve page count validation by rejecting negative and decimal values.
---
 debugging/book-library/index.html | 139 ++++++++++++------------------
 debugging/book-library/script.js  |  29 +++----
 2 files changed, 67 insertions(+), 101 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 66a6bb976..25bde2fde 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,95 +1,66 @@
 <!DOCTYPE html>
 <html lang="en">
-  <head>
-    <title>Online Book Library</title>
 
-    <meta charset="utf-8" />
-    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
+<head>
+  <title>Online Book Library</title>
 
-    <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 charset="utf-8" />
+  <meta name="viewport" content="width=device-width, initial-scale=1.0" />
 
-    <link
-      rel="stylesheet"
-      href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css"
-    />
+  <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="style.css" />
-  </head>
+  <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css" />
 
-  <body>
-    <div class="jumbotron text-center">
-      <h1>Library</h1>
-      <p>Add books to your virtual library</p>
-    </div>
+  <link rel="stylesheet" href="style.css" />
+</head>
+
+<body>
+  <div class="jumbotron text-center">
+    <h1>Library</h1>
+    <p>Add books to your virtual library</p>
+  </div>
+
+  <button data-toggle="collapse" data-target="#demo" class="btn btn-info">
+    Add new book
+  </button>
+
+  <div id="demo" class="collapse">
+    <div class="form-group">
+      <label for="title">Title:</label>
+      <input type="text" class="form-control" id="title" name="title" required />
+
+      <label for="author">Author:</label>
+      <input type="text" class="form-control" id="author" name="author" required />
 
-    <button data-toggle="collapse" data-target="#demo" class="btn btn-info">
-      Add new book
-    </button>
-
-    <div id="demo" class="collapse">
-      <div class="form-group">
-        <label for="title">Title:</label>
-        <input
-          type="text"
-          class="form-control"
-          id="title"
-          name="title"
-          required
-        />
-
-        <label for="author">Author:</label>
-        <input
-          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"
-          />
-          Read
-        </label>
-
-        <input
-          type="submit"
-          value="Submit"
-          class="btn btn-primary"
-          onclick="submit();"
-        />
-      </div>
+      <label for="pages">Pages:</label>
+      <input type="number" class="form-control" id="pages" name="pages" min="1" step="1" required />
+
+      <label class="form-check-label">
+        <input type="checkbox" class="form-check-input" id="check" />
+        Read
+      </label>
+
+      <input type="submit" value="Submit" class="btn btn-primary" onclick="submit();" />
     </div>
+  </div>
+
+  <table class="table" id="display">
+    <thead class="thead-dark">
+      <tr>
+        <th>Title</th>
+        <th>Author</th>
+        <th>Number of Pages</th>
+        <th>Read</th>
+        <th></th>
+      </tr>
+    </thead>
+
+    <tbody></tbody>
+  </table>
+
+  <script src="script.js"></script>
+</body>
 
-    <table class="table" id="display">
-      <thead class="thead-dark">
-        <tr>
-          <th>Title</th>
-          <th>Author</th>
-          <th>Number of Pages</th>
-          <th>Read</th>
-          <th></th>
-        </tr>
-      </thead>
-
-      <tbody></tbody>
-    </table>
-
-    <script src="script.js"></script>
-  </body>
 </html>
\ No newline at end of file
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 2ef7dd495..bb1f1ac31 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,5 +1,4 @@
-let myLibrary = [];
-
+const myLibrary = [];
 
 window.addEventListener("load", function () {
   populateStorage();
@@ -7,12 +6,7 @@ window.addEventListener("load", function () {
 
 function populateStorage() {
   if (myLibrary.length === 0) {
-    const book1 = new Book(
-      "Robison Crusoe",
-      "Daniel Defoe",
-      252,
-      true
-    );
+    const book1 = new Book("Robison Crusoe", "Daniel Defoe", 252, true);
 
     const book2 = new Book(
       "The Old Man and the Sea",
@@ -41,9 +35,11 @@ function submit() {
   if (
     titleValue === "" ||
     authorValue === "" ||
-    Number.isNaN(pagesValue)
+    Number.isNaN(pagesValue) ||
+    pagesValue < 1 ||
+    !Number.isInteger(pagesValue)
   ) {
-    alert("Please fill all fields!");
+    alert("Please enter a positive whole number for pages.");
     return;
   }
 
@@ -55,7 +51,6 @@ function submit() {
   );
 
   myLibrary.push(book);
-
   render();
 }
 
@@ -108,14 +103,14 @@ function render() {
     deleteButton.textContent = "Delete";
 
     deleteButton.addEventListener("click", function () {
-  const deletedTitle = myLibrary[i].title;
+      const deletedTitle = myLibrary[i].title;
 
-  myLibrary.splice(i, 1);
-  render();
+      myLibrary.splice(i, 1);
+      render();
 
-  alert(`Deleted: ${deletedTitle}`);
-});
+      alert(`Deleted: ${deletedTitle}`);
+    });
 
     deleteCell.appendChild(deleteButton);
   }
-}
\ No newline at end of file
+}

From 39ec8105726912966c28d7efc40c35fc59c974e2 Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Mon, 17 Aug 2026 02:31:38 +0100
Subject: [PATCH 7/9] Fix review comments #5 and #7:

By moving shared variables to the top of the file and refactoring table rendering to clear and update the tbody more efficiently.
---
 debugging/book-library/index.html |  2 +-
 debugging/book-library/script.js  | 21 ++++++++-------------
 2 files changed, 9 insertions(+), 14 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 25bde2fde..996f7fad0 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -57,7 +57,7 @@ <h1>Library</h1>
       </tr>
     </thead>
 
-    <tbody></tbody>
+    <tbody id="book-list"></tbody>
   </table>
 
   <script src="script.js"></script>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index bb1f1ac31..0968ebf49 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,5 +1,10 @@
 const myLibrary = [];
 
+const titleInput = document.getElementById("title");
+const authorInput = document.getElementById("author");
+const pagesInput = document.getElementById("pages");
+const readCheckbox = document.getElementById("check");
+
 window.addEventListener("load", function () {
   populateStorage();
 });
@@ -22,11 +27,6 @@ function populateStorage() {
   }
 }
 
-const titleInput = document.getElementById("title");
-const authorInput = document.getElementById("author");
-const pagesInput = document.getElementById("pages");
-const readCheckbox = document.getElementById("check");
-
 function submit() {
   const titleValue = titleInput.value.trim();
   const authorValue = authorInput.value.trim();
@@ -62,16 +62,11 @@ function Book(title, author, pages, check) {
 }
 
 function render() {
-  const table = document.getElementById("display");
-
-  const rowsNumber = table.rows.length;
-
-  for (let n = rowsNumber - 1; n > 0; n--) {
-    table.deleteRow(n);
-  }
+  const tableBody = document.getElementById("book-list");
+  tableBody.innerHTML = "";
 
   for (let i = 0; i < myLibrary.length; i++) {
-    const row = table.insertRow(1);
+    const row = tableBody.insertRow();
 
     const titleCell = row.insertCell(0);
     const authorCell = row.insertCell(1);

From 24896a1eef5bfc10bb32dc340ab074d90bf76b60 Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Mon, 17 Aug 2026 02:45:32 +0100
Subject: [PATCH 8/9] Fix review comments #2 and #8:

By adding proper form support for browser validation and applying consistent code formatting and indentation.
---
 debugging/book-library/index.html | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 996f7fad0..e13b49c8a 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -27,7 +27,7 @@ <h1>Library</h1>
   </button>
 
   <div id="demo" class="collapse">
-    <div class="form-group">
+    <form class="form-group">
       <label for="title">Title:</label>
       <input type="text" class="form-control" id="title" name="title" required />
 
@@ -43,7 +43,7 @@ <h1>Library</h1>
       </label>
 
       <input type="submit" value="Submit" class="btn btn-primary" onclick="submit();" />
-    </div>
+    </form>
   </div>
 
   <table class="table" id="display">

From 398359f886bdf9b1ecaf109fc57755429959d56a Mon Sep 17 00:00:00 2001
From: Jacknguyen4438 <jacknguyen4438@gmail.com>
Date: Mon, 17 Aug 2026 03:09:22 +0100
Subject: [PATCH 9/9] Fix review comments #1, #4 and #9:  By improving
 Bootstrap form markup, handling form submission through addEventListener, and
 updating delete notification behaviour.

---
 debugging/book-library/index.html | 13 +++++++------
 debugging/book-library/script.js  | 12 ++++++++++--
 2 files changed, 17 insertions(+), 8 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index e13b49c8a..6eee52f4a 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -27,7 +27,7 @@ <h1>Library</h1>
   </button>
 
   <div id="demo" class="collapse">
-    <form class="form-group">
+    <form class="form-group" id="book-form">
       <label for="title">Title:</label>
       <input type="text" class="form-control" id="title" name="title" required />
 
@@ -37,12 +37,13 @@ <h1>Library</h1>
       <label for="pages">Pages:</label>
       <input type="number" class="form-control" id="pages" name="pages" min="1" step="1" required />
 
-      <label class="form-check-label">
+      <div class="form-check">
         <input type="checkbox" class="form-check-input" id="check" />
-        Read
-      </label>
-
-      <input type="submit" value="Submit" class="btn btn-primary" onclick="submit();" />
+        <label class="form-check-label" for="check">
+          Read
+        </label>
+      </div>
+      <input type="submit" value="Submit" class="btn btn-primary"  />
     </form>
   </div>
 
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 0968ebf49..fbc924952 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -5,6 +5,13 @@ const authorInput = document.getElementById("author");
 const pagesInput = document.getElementById("pages");
 const readCheckbox = document.getElementById("check");
 
+const bookForm = document.getElementById("book-form");
+
+bookForm.addEventListener("submit", function (event) {
+  event.preventDefault();
+  submit();
+});
+
 window.addEventListener("load", function () {
   populateStorage();
 });
@@ -102,8 +109,9 @@ function render() {
 
       myLibrary.splice(i, 1);
       render();
-
-      alert(`Deleted: ${deletedTitle}`);
+      setTimeout(function () {
+        alert(`Deleted: ${deletedTitle}`);
+      }, 0);
     });
 
     deleteCell.appendChild(deleteButton);