From 510136191f0efedf88558ee9ee4017a57e839baa Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Tue, 16 Dec 2025 22:18:37 +0000
Subject: [PATCH 01/11] debugged the issue on the javascript file and modified
 html file.

---
 debugging/book-library/index.html |  4 ++--
 debugging/book-library/script.js  | 16 +++++++++-------
 2 files changed, 11 insertions(+), 9 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71..8e4cffce 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -62,10 +62,10 @@ <h1>Library</h1>
           />Read
         </label>
         <input
-          type="submit"
+          type="button"
           value="Submit"
           class="btn btn-primary"
-          onclick="submit();"
+          onclick="addButton();"
         />
       </div>
     </div>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..7bcafc33 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -27,18 +27,20 @@ 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() {
+function addBook() {
   if (
     title.value == null ||
     title.value == "" ||
     pages.value == null ||
-    pages.value == ""
+    pages.value == "" ||
+    author.value == null ||
+    author.value == ""
   ) {
     alert("Please fill all fields!");
     return false;
   } else {
     let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    myLibrary.push(book);
     render();
   }
 }
@@ -54,7 +56,7 @@ 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
@@ -76,7 +78,7 @@ 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";
@@ -89,12 +91,12 @@ 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";
     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 8be6584f5fc566ade68be67feba424041ebd96e7 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Thu, 18 Dec 2025 13:09:04 +0000
Subject: [PATCH 02/11] formatted it in the first place

---
 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 8e4cffce..5cd7dc52 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -93,4 +93,4 @@ <h1>Library</h1>
 
     <script src="script.js"></script>
   </body>
-</html>
+</html> 

From 69ea84e541036566e8722a28566740c2b81a099d Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Thu, 18 Dec 2025 13:15:53 +0000
Subject: [PATCH 03/11] removed unnecessary slashes

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

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 5cd7dc52..f5f5d6de 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -6,15 +6,15 @@
       charset="utf-8"
       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" type="text/css" href="style.css" >
   </head>
 
   <body>
@@ -44,7 +44,7 @@ <h1>Library</h1>
           id="author"
           name="author"
           required
-        />
+      >
         <label for="pages">Pages:</label>
         <input
           type="number"
@@ -52,21 +52,21 @@ <h1>Library</h1>
           id="pages"
           name="pages"
           required
-        />
+        >
         <label class="form-check-label">
           <input
             type="checkbox"
             class="form-check-input"
             id="check"
             value=""
-          />Read
+          >Read
         </label>
         <input
           type="button"
           value="Submit"
           class="btn btn-primary"
           onclick="addButton();"
-        />
+        >
       </div>
     </div>
 

From c719ec1f40c64743448ddf8573850e05556ba953 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Thu, 18 Dec 2025 13:23:28 +0000
Subject: [PATCH 04/11] some adjustments

---
 debugging/book-library/index.html | 29 +++++------------------------
 1 file changed, 5 insertions(+), 24 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index f5f5d6de..4f38ea1b 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -2,19 +2,12 @@
 <html>
   <head>
     <title> </title>
-    <meta
-      charset="utf-8"
-      name="viewport"
-      content="width=device-width, initial-scale=1.0"
-    >
+    <meta charset="utf-8" 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="https://maxcdn.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.min.css">
+    <link rel="stylesheet" type="text/css" href="style.css">
   </head>
 
   <body>
@@ -30,21 +23,9 @@ <h1>Library</h1>
     <div id="demo" class="collapse">
       <div class="form-group">
         <label for="title">Title:</label>
-        <input
-          type="title"
-          class="form-control"
-          id="title"
-          name="title"
-          required
-        />
+        <input type="title" class="form-control" id="title" name="title" required>
         <label for="author">Author: </label>
-        <input
-          type="author"
-          class="form-control"
-          id="author"
-          name="author"
-          required
-      >
+        <input type="author" class="form-control" id="author" name="author" required >
         <label for="pages">Pages:</label>
         <input
           type="number"

From b8cfc206ca506ad5cbd87fcf97cf1f74ef7c4049 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Thu, 18 Dec 2025 13:38:45 +0000
Subject: [PATCH 05/11] used html validator and there is no error

---
 debugging/book-library/index.html | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 4f38ea1b..26084c70 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,8 +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>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>
@@ -23,9 +23,21 @@ <h1>Library</h1>
     <div id="demo" class="collapse">
       <div class="form-group">
         <label for="title">Title:</label>
-        <input type="title" class="form-control" id="title" name="title" required>
+        <input
+          type="text"
+          class="form-control"
+          id="title"
+          name="title"
+          required
+    >
         <label for="author">Author: </label>
-        <input type="author" class="form-control" id="author" name="author" required >
+        <input
+          type="text"
+          class="form-control"
+          id="author"
+          name="author"
+          required
+      >
         <label for="pages">Pages:</label>
         <input
           type="number"

From 333f269c35646247d39d573e8c531001bda10819 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Thu, 18 Dec 2025 14:27:58 +0000
Subject: [PATCH 06/11] made some modifications in the js file

---
 debugging/book-library/index.html |  2 +-
 debugging/book-library/script.js  | 65 +++++++++++++++----------------
 2 files changed, 33 insertions(+), 34 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 26084c70..daf791d1 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -58,7 +58,7 @@ <h1>Library</h1>
           type="button"
           value="Submit"
           class="btn btn-primary"
-          onclick="addButton();"
+          onclick="addBook();"
         >
       </div>
     </div>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 7bcafc33..cdb72abc 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -7,16 +7,15 @@ 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);
-    myLibrary.push(book2);
-    render();
+    myLibrary.push(book1,book2);
+    
   }
 }
 
@@ -28,21 +27,20 @@ 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 addBook() {
-  if (
-    title.value == null ||
-    title.value == "" ||
-    pages.value == null ||
-    pages.value == "" ||
-    author.value == null ||
-    author.value == ""
-  ) {
-    alert("Please fill all fields!");
+  if (!title.value.trim() || !author.value.trim() || !pages.value.trim()) {
+  alert("Please fill all fields!");
+  return false;
+  }
+  
+  let pagesNumber = parseInt(pages.value, 10);
+  if (isNaN(pagesNumber)) {
+    alert("Page count must be a number!");
     return false;
-  } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    myLibrary.push(book);
-    render();
   }
+    let book = new Book(title.value.trim(), author.value.trim(), pagesNumber, check.checked);
+  myLibrary.push(book);
+  render();
+
 }
 
 function Book(title, author, pages, check) {
@@ -68,35 +66,36 @@ function render() {
     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;
+   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 toggleReadBtn = document.createElement("button");
+    toggleReadBtn.dataset.index = i;
+    toggleReadBtn.className = "btn btn-success";
+    wasReadCell.appendChild(toggleReadBtn);
     let readStatus = "";
     if (myLibrary[i].check == true) {
       readStatus = "Yes";
     } else {
       readStatus = "No";
     }
-    changeBut.innerText = readStatus;
+    toggleReadBtn.innerText = readStatus;
 
-    changeBut.addEventListener("click", function () {
+    toggleReadBtn.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;
       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";
-    delBut.addEventListener("click", function () {
+    let deleteBtn = document.createElement("button");
+    deleteBtn.dataset.index = i;
+    deleteCell.appendChild(deleteBtn);
+    deleteBtn.className = "btn btn-warning";
+    deleteBtn.innerHTML = "Delete";
+    deleteBtn.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();

From db2bff78b606421e5b206a76da93db2a46a3a485 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Fri, 19 Dec 2025 00:29:33 +0000
Subject: [PATCH 07/11] wrote a conditional statement in a single statement

---
 debugging/book-library/script.js | 40 +++++++++++++++++++-------------
 1 file changed, 24 insertions(+), 16 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index cdb72abc..16dd428c 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -27,20 +27,30 @@ 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 addBook() {
-  if (!title.value.trim() || !author.value.trim() || !pages.value.trim()) {
-  alert("Please fill all fields!");
-  return false;
+  const sanitizedTitle = title.value.trim();
+  const sanitizedAuthor = author.value.trim();
+  const sanitizedPages = Number(pages.value);
+  const isRead = check.checked;
+
+  if (!sanitizedTitle || !sanitizedAuthor) {
+    alert("Title and author cannot be empty.");
+    return;
   }
-  
-  let pagesNumber = parseInt(pages.value, 10);
-  if (isNaN(pagesNumber)) {
-    alert("Page count must be a number!");
-    return false;
+
+  if (!Number.isInteger(sanitizedPages) || sanitizedPages <= 0) {
+    alert("Pages must be a positive whole number.");
+    return;
   }
-    let book = new Book(title.value.trim(), author.value.trim(), pagesNumber, check.checked);
+
+  const book = new Book(
+    sanitizedTitle,
+    sanitizedAuthor,
+    sanitizedPages,
+    isRead
+  );
+
   myLibrary.push(book);
   render();
-
 }
 
 function Book(title, author, pages, check) {
@@ -76,13 +86,11 @@ function render() {
     toggleReadBtn.dataset.index = i;
     toggleReadBtn.className = "btn btn-success";
     wasReadCell.appendChild(toggleReadBtn);
-    let readStatus = "";
-    if (myLibrary[i].check == true) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
+    
+    let readStatus = myLibrary[i].check ? "Yes" : "No";
     toggleReadBtn.innerText = readStatus;
+    changeBut.innerText = readStatus;
+
 
     toggleReadBtn.addEventListener("click", function () {
       myLibrary[i].check = !myLibrary[i].check;

From 536e55ac3c1a6cf0c5db4fb2743c7b23bec353c8 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Fri, 19 Dec 2025 00:32:28 +0000
Subject: [PATCH 08/11] assign the DOM via textContent

---
 debugging/book-library/script.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 16dd428c..f543693c 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -88,8 +88,8 @@ function render() {
     wasReadCell.appendChild(toggleReadBtn);
     
     let readStatus = myLibrary[i].check ? "Yes" : "No";
-    toggleReadBtn.innerText = readStatus;
-    changeBut.innerText = readStatus;
+    toggleReadBtn.textContent = readStatus;
+    changeBut.textContent = readStatus;
 
 
     toggleReadBtn.addEventListener("click", function () {
@@ -102,7 +102,7 @@ function render() {
     deleteBtn.dataset.index = i;
     deleteCell.appendChild(deleteBtn);
     deleteBtn.className = "btn btn-warning";
-    deleteBtn.innerHTML = "Delete";
+    deleteBtn.textContent = "Delete";
     deleteBtn.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);

From cfe265098246acd8aca6c05e7ba1b300813b6b4c Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Fri, 19 Dec 2025 00:40:45 +0000
Subject: [PATCH 09/11] removed unnecessary variables

---
 debugging/book-library/script.js | 21 ++++++++-------------
 1 file changed, 8 insertions(+), 13 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index f543693c..29584132 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -82,20 +82,15 @@ function render() {
 
 
     //add and wait for action for read/unread button
-    let toggleReadBtn = document.createElement("button");
-    toggleReadBtn.dataset.index = i;
-    toggleReadBtn.className = "btn btn-success";
-    wasReadCell.appendChild(toggleReadBtn);
-    
-    let readStatus = myLibrary[i].check ? "Yes" : "No";
-    toggleReadBtn.textContent = readStatus;
-    changeBut.textContent = readStatus;
-
+   let toggleReadBtn = document.createElement("button");
+   toggleReadBtn.className = "btn btn-success";
+   toggleReadBtn.innerText = myLibrary[i].check ? "Yes" : "No"; // ternary operator
+   wasReadCell.appendChild(toggleReadBtn);
 
-    toggleReadBtn.addEventListener("click", function () {
-      myLibrary[i].check = !myLibrary[i].check;
-      render();
-    });
+   toggleReadBtn.addEventListener("click", function () {
+   myLibrary[i].check = !myLibrary[i].check;
+   render();
+});
 
     //add delete button to every row and render again
     let deleteBtn = document.createElement("button");

From bee984d2b6f10f119caa1147625fa179053102e9 Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Fri, 19 Dec 2025 00:44:29 +0000
Subject: [PATCH 10/11] made some changes

---
 debugging/book-library/script.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 29584132..63b51c63 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -64,9 +64,9 @@ 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 = table.querySelector("tbody");
+  tbody.innerHTML = "";
+
   //insert updated row and cells
   let length = myLibrary.length;
   for (let i = 0; i < length; i++) {

From ff8a6ea294c6cf2f0c9ffe57deede1fdb5a2c37c Mon Sep 17 00:00:00 2001
From: Fithi Teklom <fthiteklom@gmail.com>
Date: Fri, 19 Dec 2025 21:38:51 +0000
Subject: [PATCH 11/11] fixed the bug

---
 debugging/book-library/script.js | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 63b51c63..d728a934 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -70,7 +70,7 @@ function render() {
   //insert updated row and cells
   let length = myLibrary.length;
   for (let i = 0; i < length; i++) {
-    let row = table.insertRow(1);
+    let row = tbody.insertRow();
     let titleCell = row.insertCell(0);
     let authorCell = row.insertCell(1);
     let pagesCell = row.insertCell(2);
@@ -81,7 +81,6 @@ function render() {
    pagesCell.textContent = myLibrary[i].pages;
 
 
-    //add and wait for action for read/unread button
    let toggleReadBtn = document.createElement("button");
    toggleReadBtn.className = "btn btn-success";
    toggleReadBtn.innerText = myLibrary[i].check ? "Yes" : "No"; // ternary operator
@@ -89,9 +88,10 @@ function render() {
 
    toggleReadBtn.addEventListener("click", function () {
    myLibrary[i].check = !myLibrary[i].check;
-   render();
+  render();
 });
 
+
     //add delete button to every row and render again
     let deleteBtn = document.createElement("button");
     deleteBtn.dataset.index = i;