From a1682cb980487a679b3695ffaffb39ee9fec4b4a Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 12 Apr 2026 09:42:48 +0200
Subject: [PATCH 01/22] Fix: allow books to display by correcting syntax errors

---
 debugging/book-library/script.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..abcd4293 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
@@ -89,7 +89,7 @@ function render() {
     });
 
     //add delete button to every row and render again
-    let delButton = document.createElement("button");
+    let delBut = document.createElement("button");
     delBut.id = i + 5;
     deleteCell.appendChild(delBut);
     delBut.className = "btn btn-warning";

From e75af8779eba9bfed4bd47cb002023017b4b6cc4 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 12 Apr 2026 09:50:55 +0200
Subject: [PATCH 02/22] Fix: allow new books to be added

---
 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 abcd4293..19c53ac2 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -38,7 +38,7 @@ function submit() {
     return false;
   } else {
     let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    myLibrary.push(book);
     render();
   }
 }

From 3fd4d7a481320a370ba043d9ad6ddb96bece3394 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 12 Apr 2026 09:53:17 +0200
Subject: [PATCH 03/22] Fix: display correct author name, and not title

---
 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 19c53ac2..f95d0887 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -37,7 +37,7 @@ function submit() {
     alert("Please fill all fields!");
     return false;
   } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
+    let book = new Book(title.value, author.value, pages.value, check.checked);
     myLibrary.push(book);
     render();
   }

From 52b0d0bd120dea575a4a34a804deb61cbb1c99ed Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 12 Apr 2026 12:35:41 +0200
Subject: [PATCH 04/22] Fix: allow books to be deleted by correcting syntax
 error

---
 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 f95d0887..78525521 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -94,7 +94,7 @@ function render() {
     deleteCell.appendChild(delBut);
     delBut.className = "btn btn-warning";
     delBut.innerHTML = "Delete";
-    delBut.addEventListener("clicks", function () {
+    delBut.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();

From d751fcc65632cebad3cd0c0e0dca565de6ef36e7 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 12 Apr 2026 12:56:50 +0200
Subject: [PATCH 05/22] Fix: save checked status correctly

---
 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 78525521..dd143816 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -37,7 +37,7 @@ function submit() {
     alert("Please fill all fields!");
     return false;
   } else {
-    let book = new Book(title.value, author.value, pages.value, check.checked);
+    let book = new Book(title.value, author.value, pages.value, check.value);
     myLibrary.push(book);
     render();
   }

From 687952b9b9a83e45cb5d08000ee3f2e6aa7ddf8c Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 19 Apr 2026 14:08:44 +0200
Subject: [PATCH 06/22] Fix: correct syntax errors in HTML

---
 debugging/book-library/index.html | 19 ++++++++-----------
 1 file changed, 8 insertions(+), 11 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71..01efa284 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,12 +1,9 @@
-<!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>Virtual 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>
@@ -31,7 +28,7 @@ <h1>Library</h1>
       <div class="form-group">
         <label for="title">Title:</label>
         <input
-          type="title"
+          type="text"
           class="form-control"
           id="title"
           name="title"
@@ -39,7 +36,7 @@ <h1>Library</h1>
         />
         <label for="author">Author: </label>
         <input
-          type="author"
+          type="text"
           class="form-control"
           id="author"
           name="author"
@@ -65,7 +62,7 @@ <h1>Library</h1>
           type="submit"
           value="Submit"
           class="btn btn-primary"
-          onclick="submit();"
+          onclick="submit()"
         />
       </div>
     </div>

From f75c49badaebc8fb994ac98b1fbf3d11737f5d5c Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 19 Apr 2026 14:27:51 +0200
Subject: [PATCH 07/22] Modularize and isolate script.js

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

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 01efa284..5803271b 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -88,6 +88,6 @@ <h1>Library</h1>
       </tbody>
     </table>
 
-    <script src="script.js"></script>
+    <script src="script.js" type="module"></script>
   </body>
 </html>

From 92f9595c755f36b89738dfcee25971d8e4bfda44 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 19 Apr 2026 14:40:41 +0200
Subject: [PATCH 08/22] Fix: add event listener for submitting new book

---
 debugging/book-library/index.html | 2 +-
 debugging/book-library/script.js  | 3 +++
 2 files changed, 4 insertions(+), 1 deletion(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 5803271b..b2df478c 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -62,7 +62,7 @@ <h1>Library</h1>
           type="submit"
           value="Submit"
           class="btn btn-primary"
-          onclick="submit()"
+          id="submitBtn"
         />
       </div>
     </div>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index dd143816..a47b6480 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -25,6 +25,9 @@ const author = document.getElementById("author");
 const pages = document.getElementById("pages");
 const check = document.getElementById("check");
 
+const submitBtn = document.querySelector('input[type="submit"]');
+submitBtn.addEventListener("click", submit);
+
 //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() {

From ea811f6d7d22a5054d3c8a98f53512b00ffd76b6 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 19 Apr 2026 14:44:02 +0200
Subject: [PATCH 09/22] Style: clear the form after a new book is added

---
 debugging/book-library/script.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index a47b6480..933b8880 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -42,6 +42,12 @@ function submit() {
   } else {
     let book = new Book(title.value, author.value, pages.value, check.value);
     myLibrary.push(book);
+
+    title.value = "";
+    author.value = "";
+    pages.value = "";
+    check.value = false;
+
     render();
   }
 }

From 58a38fa6807d1498aa452a85fd44a9f17f79d931 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Sun, 19 Apr 2026 14:54:50 +0200
Subject: [PATCH 10/22] Fix: correct read label status

---
 debugging/book-library/index.html | 7 +------
 debugging/book-library/script.js  | 6 +++---
 2 files changed, 4 insertions(+), 9 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index b2df478c..f9505532 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -51,12 +51,7 @@ <h1>Library</h1>
           required
         />
         <label class="form-check-label">
-          <input
-            type="checkbox"
-            class="form-check-input"
-            id="check"
-            value=""
-          />Read
+          <input type="checkbox" class="form-check-input" id="check" />Read
         </label>
         <input
           type="submit"
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 933b8880..59361a37 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -40,13 +40,13 @@ function submit() {
     alert("Please fill all fields!");
     return false;
   } else {
-    let book = new Book(title.value, author.value, pages.value, check.value);
+    let book = new Book(title.value, author.value, pages.value, check.checked);
     myLibrary.push(book);
 
     title.value = "";
     author.value = "";
     pages.value = "";
-    check.value = false;
+    check.checked = false;
 
     render();
   }
@@ -85,7 +85,7 @@ 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";

From ba8fc0446ccabb04b511a151fed8b503302f4027 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:19:09 +0200
Subject: [PATCH 11/22] Validate input before form is submitted

---
 debugging/book-library/index.html | 80 +++++++++++++++++--------------
 debugging/book-library/script.js  |  6 ++-
 2 files changed, 49 insertions(+), 37 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index f9505532..7a8def65 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -25,41 +25,51 @@ <h1>Library</h1>
     </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"
-          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"
-          id="submitBtn"
-        />
-      </div>
+      <form id="bookForm">
+        <div class="form-group">
+          <label for="title">Title:</label>
+          <input
+            type="text"
+            class="form-control"
+            id="title"
+            name="title"
+            required
+            minlength="1"
+            maxlength="40"
+            pattern=".*\S+.*"
+          />
+          <label for="author">Author: </label>
+          <input
+            type="text"
+            class="form-control"
+            id="author"
+            name="author"
+            required
+            minlength="1"
+            maxlength="40"
+            pattern=".*\S+.*"
+          />
+          <label for="pages">Pages:</label>
+          <input
+            type="number"
+            class="form-control"
+            id="pages"
+            name="pages"
+            required
+            min="1"
+            max="2000"
+          />
+          <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"
+            id="submitBtn"
+          />
+        </div>
+      </form>
     </div>
 
     <table class="table" id="display">
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 59361a37..ef332102 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -25,8 +25,10 @@ const author = document.getElementById("author");
 const pages = document.getElementById("pages");
 const check = document.getElementById("check");
 
-const submitBtn = document.querySelector('input[type="submit"]');
-submitBtn.addEventListener("click", submit);
+const submitForm = document.getElementById("bookForm");
+submitForm.addEventListener("submit", function (e) {
+  e.preventDefault();
+});
 
 //check the right input from forms and if its ok -> add the new book (object in array)
 //via Book function and start render function

From 672ec4e89dc77867c49f7e0daf2e602bc0b0ca20 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:29:40 +0200
Subject: [PATCH 12/22] Fix: correctly add new books into library

---
 debugging/book-library/script.js | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index ef332102..7fabc270 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -28,6 +28,12 @@ const check = document.getElementById("check");
 const submitForm = document.getElementById("bookForm");
 submitForm.addEventListener("submit", function (e) {
   e.preventDefault();
+
+  let book = new Book(title.value, author.value, pages.value, check.checked);
+  myLibrary.push(book);
+  submitForm.reset();
+
+  render();
 });
 
 //check the right input from forms and if its ok -> add the new book (object in array)

From bad4502fe185447188862e2c6ecd02e68e110ae4 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:31:41 +0200
Subject: [PATCH 13/22] Refactor: remove duplicate rendering

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

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 7fabc270..088c2b6e 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -16,7 +16,6 @@ function populateStorage() {
     );
     myLibrary.push(book1);
     myLibrary.push(book2);
-    render();
   }
 }
 

From c4cd9b4d112902cef545f58abadd99928576092c Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:36:02 +0200
Subject: [PATCH 14/22] Refactor: remove duplicate forms input validation

---
 debugging/book-library/script.js | 24 ------------------------
 1 file changed, 24 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 088c2b6e..1f6d175d 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -35,30 +35,6 @@ submitForm.addEventListener("submit", function (e) {
   render();
 });
 
-//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, author.value, pages.value, check.checked);
-    myLibrary.push(book);
-
-    title.value = "";
-    author.value = "";
-    pages.value = "";
-    check.checked = false;
-
-    render();
-  }
-}
-
 function Book(title, author, pages, check) {
   this.title = title;
   this.author = author;

From 1b9ec8ea6b9b81421ed0c267e8b1b085ab4fd633 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:41:54 +0200
Subject: [PATCH 15/22] Refactor: remove unneccessary id labelling

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

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 1f6d175d..c9a8e086 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -64,7 +64,6 @@ function render() {
 
     //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 = "";
@@ -82,7 +81,6 @@ function render() {
 
     //add delete button to every row and render again
     let delBut = document.createElement("button");
-    delBut.id = i + 5;
     deleteCell.appendChild(delBut);
     delBut.className = "btn btn-warning";
     delBut.innerHTML = "Delete";

From 5f43e963d2191ca6f1fd3beaa4224298d93269f8 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 03:58:59 +0200
Subject: [PATCH 16/22] Refactor: simplify repetitive code

---
 debugging/book-library/script.js | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index c9a8e086..f9f10833 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -14,8 +14,7 @@ function populateStorage() {
       "127",
       true
     );
-    myLibrary.push(book1);
-    myLibrary.push(book2);
+    myLibrary.push(book1, book2);
   }
 }
 

From b8786ad3f0ee57ed5480ece49e1d50ab10ef160c Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 04:16:42 +0200
Subject: [PATCH 17/22] Refactor: simplify render function

---
 debugging/book-library/script.js | 70 ++++++++++++++------------------
 1 file changed, 30 insertions(+), 40 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index f9f10833..b175a3d6 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -42,51 +42,41 @@ 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);
-  }
-  //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;
+  const tbody = document.querySelector("#display tbody");
+  // Clear existing rows
+  tbody.innerHTML = "";
+
+  myLibrary.forEach((book, index) => {
+    // Create a new row and cells for each book
+    const row = tbody.insertRow();
+    row.insertCell(0).textContent = book.title;
+    row.insertCell(1).textContent = book.author;
+    row.insertCell(2).textContent = book.pages;
 
-    //add and wait for action for read/unread button
-    let changeBut = document.createElement("button");
-    changeBut.className = "btn btn-success";
-    wasReadCell.appendChild(changeBut);
-    let readStatus = "";
-    if (myLibrary[i].check == true) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.innerText = readStatus;
+    const wasReadCell = row.insertCell(3);
+    const readBtn = document.createElement("button");
+    readBtn.className = "btn btn-success";
+    readBtn.textContent = book.check ? "Yes" : "No";
 
-    changeBut.addEventListener("click", function () {
-      myLibrary[i].check = !myLibrary[i].check;
+    // Toggle the read status when the button is clicked
+    readBtn.addEventListener("click", () => {
+      book.check = !book.check;
       render();
     });
+    wasReadCell.appendChild(readBtn);
 
-    //add delete button to every row and render again
-    let delBut = document.createElement("button");
-    deleteCell.appendChild(delBut);
-    delBut.className = "btn btn-warning";
-    delBut.innerHTML = "Delete";
-    delBut.addEventListener("click", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
-      myLibrary.splice(i, 1);
+    // Create a delete button for each book
+    const deleteCell = row.insertCell(4);
+    const deleteBtn = document.createElement("button");
+    deleteBtn.className = "btn btn-warning";
+    deleteBtn.textContent = "Delete";
+
+    // Render the updated library when the delete button is clicked
+    deleteBtn.addEventListener("click", () => {
+      alert(`You've deleted title: ${book.title}`);
+      myLibrary.splice(index, 1);
       render();
     });
-  }
+    deleteCell.appendChild(deleteBtn);
+  });
 }

From 0e8dec08d9471a766da46be71a307a1fb3ca57db Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 04:22:53 +0200
Subject: [PATCH 18/22] Refactor: treat page count as an integer throughout

---
 debugging/book-library/script.js | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index b175a3d6..f415faf2 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -7,11 +7,11 @@ window.addEventListener("load", function (e) {
 
 function populateStorage() {
   if (myLibrary.length == 0) {
-    let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
+    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, book2);
@@ -27,7 +27,12 @@ const submitForm = document.getElementById("bookForm");
 submitForm.addEventListener("submit", function (e) {
   e.preventDefault();
 
-  let book = new Book(title.value, author.value, pages.value, check.checked);
+  let book = new Book(
+    title.value,
+    author.value,
+    parseInt(pages.value),
+    check.checked
+  );
   myLibrary.push(book);
   submitForm.reset();
 

From 5a768e1469af605d1b04239205b8396a27a1f6ab Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 04:26:15 +0200
Subject: [PATCH 19/22] Refactor: improve readbility with more descriptive
 variable names

---
 debugging/book-library/script.js | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index f415faf2..0a18326a 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -18,20 +18,20 @@ function populateStorage() {
   }
 }
 
-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 checkInput = document.getElementById("check");
 
 const submitForm = document.getElementById("bookForm");
 submitForm.addEventListener("submit", function (e) {
   e.preventDefault();
 
   let book = new Book(
-    title.value,
-    author.value,
-    parseInt(pages.value),
-    check.checked
+    titleInput.value,
+    authorInput.value,
+    parseInt(pagesInput.value),
+    checkInput.checked
   );
   myLibrary.push(book);
   submitForm.reset();

From b72bd52588ca3bfb14d754bc0670caa96c50621c Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 04:33:26 +0200
Subject: [PATCH 20/22] Refactor: sanitize form input to remove uneccessary
 white spaces

---
 debugging/book-library/script.js | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 0a18326a..90662874 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -28,8 +28,8 @@ submitForm.addEventListener("submit", function (e) {
   e.preventDefault();
 
   let book = new Book(
-    titleInput.value,
-    authorInput.value,
+    titleInput.value.trim(),
+    authorInput.value.trim(),
     parseInt(pagesInput.value),
     checkInput.checked
   );

From 2b390dce18d894f38874367e326b3db9f0122521 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 07:32:57 +0200
Subject: [PATCH 21/22] Refactor: display alert message only after successful
 deletion

---
 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 90662874..bc42d94e 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -78,8 +78,8 @@ function render() {
 
     // Render the updated library when the delete button is clicked
     deleteBtn.addEventListener("click", () => {
-      alert(`You've deleted title: ${book.title}`);
       myLibrary.splice(index, 1);
+      alert(`You've deleted title: ${book.title}`);
       render();
     });
     deleteCell.appendChild(deleteBtn);

From 314fb76e5081d0a0c1caf13ab631e051ebe53983 Mon Sep 17 00:00:00 2001
From: Isaac Abodunrin <isaacabodunrin05@gmail.com>
Date: Mon, 20 Apr 2026 07:41:10 +0200
Subject: [PATCH 22/22] Refactor: declare myLibrary with const instead of let

---
 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 bc42d94e..12b61272 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,4 +1,4 @@
-let myLibrary = [];
+const myLibrary = [];
 
 window.addEventListener("load", function (e) {
   populateStorage();