From 3d8b1b7ae83583e97e72e8fa03e2b9e57da4b315 Mon Sep 17 00:00:00 2001
From: Martin <majamc@outlook.com>
Date: Thu, 16 Apr 2026 12:08:33 +0100
Subject: [PATCH 1/5] librery should work as expected now

---
 debugging/book-library/script.js | 89 ++++++++++++++++++++------------
 debugging/code-reading/readme.md |  9 ++++
 2 files changed, 65 insertions(+), 33 deletions(-)

diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..36c4945a 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -5,41 +5,49 @@ window.addEventListener("load", function (e) {
   render();
 });
 
+
+
+
 function populateStorage() {
-  if (myLibrary.length == 0) {
+  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
-    );
-    myLibrary.push(book1);
-    myLibrary.push(book2);
-    render();
+      "Ernest Hemingway", "5", true);
+    myLibrary.push(book1, 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() {
+  const title = document.getElementById("title").value;
+  const author = document.getElementById("author").value;
+  const pages = document.getElementById("pages").value;
+  const check = document.getElementById("check").checked;
   if (
-    title.value == null ||
-    title.value == "" ||
-    pages.value == null ||
-    pages.value == ""
-  ) {
+    
+    title == "" ||
+    pages == ""||
+    author == ""
+    )
+
+   {
     alert("Please fill all fields!");
-    return false;
+    return true;
   } else {
-    let book = new Book(title.value, title.value, pages.value, check.checked);
-    library.push(book);
+    let book = new Book(title, author, pages, check);
+    myLibrary.push(book);
     render();
+       //clear the input values
+
+  
   }
 }
 
@@ -54,12 +62,17 @@ 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
-  let length = myLibrary.length;
-  for (let i = 0; i < length; i++) {
+  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);
@@ -69,6 +82,11 @@ function render() {
     titleCell.innerHTML = myLibrary[i].title;
     authorCell.innerHTML = myLibrary[i].author;
     pagesCell.innerHTML = myLibrary[i].pages;
+  
+    //deleteCell.innerHTML = delBut[i]
+
+
+  
 
     //add and wait for action for read/unread button
     let changeBut = document.createElement("button");
@@ -76,7 +94,7 @@ 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";
@@ -84,20 +102,25 @@ function render() {
     changeBut.innerText = readStatus;
 
     changeBut.addEventListener("click", function () {
-      myLibrary[i].check = !myLibrary[i].check;
-      render();
-    });
 
+    if( myLibrary[i].check == true){
+      myLibrary[i].check = false;
+    }
+    else {
+      myLibrary[i].check = true;
+    }
+
+      render();
+  });
     //add delete button to every row and render again
-    let delButton = document.createElement("button");
-    delBut.id = i + 5;
+    let delBut = document.createElement("button");
+    delBut.id = i ;
     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();
-    });
+    })};
   }
-}
diff --git a/debugging/code-reading/readme.md b/debugging/code-reading/readme.md
index 4090c14c..4ccd7786 100644
--- a/debugging/code-reading/readme.md
+++ b/debugging/code-reading/readme.md
@@ -16,6 +16,8 @@ Take a look at the following code:
 ```
 
 Explain why line 5 and line 8 output different numbers.
+line 5 logs the "let x" from the local scope of the function 
+where as line 8 uses the "let x" from line one in the global scope
 
 ## Question 2
 
@@ -34,6 +36,13 @@ console.log(y);
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
+you will get 
+10
+undefined
+undefined
+the x is in the global scope so accsesable to f1
+f1 has no return value to log 
+and the y is only in the local scope of the function
 
 ## Question 3
 

From b0f2a10363513a4e00d79bbe898843b96ff381dd Mon Sep 17 00:00:00 2001
From: Martin <majamc@outlook.com>
Date: Thu, 16 Apr 2026 12:14:51 +0100
Subject: [PATCH 2/5] file fixed

---
 debugging/code-reading/readme.md | 9 ---------
 1 file changed, 9 deletions(-)

diff --git a/debugging/code-reading/readme.md b/debugging/code-reading/readme.md
index 4ccd7786..4090c14c 100644
--- a/debugging/code-reading/readme.md
+++ b/debugging/code-reading/readme.md
@@ -16,8 +16,6 @@ Take a look at the following code:
 ```
 
 Explain why line 5 and line 8 output different numbers.
-line 5 logs the "let x" from the local scope of the function 
-where as line 8 uses the "let x" from line one in the global scope
 
 ## Question 2
 
@@ -36,13 +34,6 @@ console.log(y);
 ```
 
 What will be the output of this code. Explain your answer in 50 words or less.
-you will get 
-10
-undefined
-undefined
-the x is in the global scope so accsesable to f1
-f1 has no return value to log 
-and the y is only in the local scope of the function
 
 ## Question 3
 

From c2e4d17fcc53a08eff8e693a5fa0be7c931db46d Mon Sep 17 00:00:00 2001
From: Martin <majamc@outlook.com>
Date: Fri, 17 Apr 2026 12:56:55 +0100
Subject: [PATCH 3/5] made a start on the refactor stuck on how to clear the
 table at top of render function

---
 debugging/book-library/index.html |   2 +-
 debugging/book-library/script.js  | 132 +++++++++++++-----------------
 2 files changed, 56 insertions(+), 78 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71..8b315f5e 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -91,6 +91,6 @@ <h1>Library</h1>
       </tbody>
     </table>
 
-    <script src="script.js"></script>
+    <script src="script.js" ></script>
   </body>
 </html>
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 36c4945a..1e44671e 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,126 +1,104 @@
 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(
+    const book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
+    const book2 = new Book(
       "The Old Man and the Sea",
-      "Ernest Hemingway", "5", true);
+      "Ernest Hemingway",
+      "500",
+      true
+    );
     myLibrary.push(book1, book2);
-      
 
-   render();
+    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() {
-  const title = document.getElementById("title").value;
-  const author = document.getElementById("author").value;
-  const pages = document.getElementById("pages").value;
-  const check = document.getElementById("check").checked;
-  if (
-    
-    title == "" ||
-    pages == ""||
-    author == ""
-    )
-
-   {
+  const titleInput = document.getElementById("title").value;
+  const authorInput = document.getElementById("author").value;
+  const pagesInput = document.getElementById("pages").value;
+  const checkInput = document.getElementById("check").checked;
+  if (titleInput == "" || pagesInput == "" || authorInput == "") {
     alert("Please fill all fields!");
     return true;
   } else {
-    let book = new Book(title, author, pages, check);
+    let book = new Book(titleInput, authorInput, pagesInput, checkInput);
     myLibrary.push(book);
     render();
-       //clear the input values
-
-  
+    //clear the input values
   }
 }
 
-function Book(title, author, pages, check) {
-  this.title = title;
-  this.author = author;
-  this.pages = pages;
-  this.check = check;
+function Book(titleInput, authorInput, pagesInput, checkInput) {
+  this.title = titleInput;
+  this.author = authorInput;
+  this.pages = pagesInput;
+  this.check = checkInput;
 }
 
 function render() {
-  let table = document.getElementById("display");
-  let rowsNumber = table.rows.length;
+  const table = document.getElementById("display");
+  const rowsNumber = table.rows.length;
   //delete old table
-  for (let n = rowsNumber - 1; n > 0; n--) {
-    table.deleteRow(n);
- 
- }
 
+ for (let n = rowsNumber - 1;  n > 0; n--) {
+  table.deleteRow(n); 
+  }
 
- 
   //insert updated row and cells
-  let length = myLibrary.length ;
+  const 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);
+    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.innerHTML = myLibrary[i].title;
     authorCell.innerHTML = myLibrary[i].author;
     pagesCell.innerHTML = myLibrary[i].pages;
-  
-    //deleteCell.innerHTML = delBut[i]
 
-
-  
+    //deleteCell.innerHTML = button[i]
 
     //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);
+    const changeButton = document.createElement("button");
+    changeButton.id = i;
+    changeButton.className = "btn btn-success";
+    wasReadCell.appendChild(changeButton);
     let readStatus = "";
-    if (myLibrary[i].check == true) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.innerText = readStatus;
 
-    changeBut.addEventListener("click", function () {
+    myLibrary[i].check == true 
+      ? (readStatus = "Yes") 
+      : (readStatus = "No");
+
+    changeButton.innerText = readStatus;
 
-    if( myLibrary[i].check == true){
-      myLibrary[i].check = false;
-    }
-    else {
-      myLibrary[i].check = true;
-    }
+    changeButton.addEventListener("click", function () {
+      myLibrary[i].check == true
+        ? (myLibrary[i].check = false)
+        : (myLibrary[i].check = true);
 
       render();
-  });
+    });
     //add delete button to every row and render again
-    let delBut = document.createElement("button");
-    delBut.id = i ;
-    deleteCell.appendChild(delBut);
-    delBut.className = "btn btn-warning";
-    delBut.innerHTML = "Delete";
-    delBut.addEventListener("click", function () {
+    const button = document.createElement("button");
+    button.id = i;
+    deleteCell.appendChild(button);
+    button.className = "btn btn-warning";
+    button.innerHTML = "Delete";
+    button.addEventListener("click", function () {
       alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();
-    })};
+    });
   }
+}

From cd3f7dd69537487206d409847f5dbc30ac6c6b8d Mon Sep 17 00:00:00 2001
From: Martin <majamc@outlook.com>
Date: Fri, 17 Apr 2026 13:01:46 +0100
Subject: [PATCH 4/5] i think i got it

---
 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 1e44671e..79cb052c 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -49,11 +49,11 @@ function render() {
   const table = document.getElementById("display");
   const rowsNumber = table.rows.length;
   //delete old table
-
- for (let n = rowsNumber - 1;  n > 0; n--) {
-  table.deleteRow(n); 
+while (table.rows.length > 1) {
+  table.deleteRow(1); 
   }
 
+
   //insert updated row and cells
   const length = myLibrary.length;
   for (let i = 0; i <= length; i++) {

From 6757af640547b065d53a8a262d6631050bcd725e Mon Sep 17 00:00:00 2001
From: Martin <majamc@outlook.com>
Date: Fri, 17 Apr 2026 17:04:19 +0100
Subject: [PATCH 5/5] 12 of the 13 issuse adressed haveing some trouble with
 the delete order

---
 debugging/book-library/index.html | 30 ++++++++++----------
 debugging/book-library/script.js  | 46 ++++++++++++++-----------------
 2 files changed, 37 insertions(+), 39 deletions(-)

diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 8b315f5e..707a2510 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,20 +1,18 @@
 <!DOCTYPE html>
-<html>
+<html lang="en">
   <head>
-    <title> </title>
+    <title>Library Books</title>
     <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" type="text/css" href="style.css">
   </head>
 
   <body>
@@ -31,42 +29,46 @@ <h1>Library</h1>
       <div class="form-group">
         <label for="title">Title:</label>
         <input
-          type="title"
+          type="text"
           class="form-control"
           id="title"
           name="title"
+          placeholder="Title"
           required
-        />
+        >
         <label for="author">Author: </label>
         <input
-          type="author"
+          type="text"
           class="form-control"
           id="author"
           name="author"
+          placeholder="Author"
           required
-        />
+        >
         <label for="pages">Pages:</label>
         <input
           type="number"
           class="form-control"
           id="pages"
           name="pages"
+          placeholder="Between 1 and 16000"
+          max="16000"
           required
-        />
+        >
         <label class="form-check-label">
           <input
             type="checkbox"
             class="form-check-input"
             id="check"
             value=""
-          />Read
+          >Read
         </label>
         <input
           type="submit"
           value="Submit"
           class="btn btn-primary"
           onclick="submit();"
-        />
+        >
       </div>
     </div>
 
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 79cb052c..9d295062 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 () {
   populateStorage();
@@ -23,18 +23,22 @@ function populateStorage() {
 //via Book function and start render function
 
 function submit() {
-  const titleInput = document.getElementById("title").value;
-  const authorInput = document.getElementById("author").value;
+  const titleInput = document.getElementById("title").value.trimStart();
+  const authorInput = document.getElementById("author").value.trimStart();
   const pagesInput = document.getElementById("pages").value;
   const checkInput = document.getElementById("check").checked;
-  if (titleInput == "" || pagesInput == "" || authorInput == "") {
+  if (
+    titleInput == "" ||
+    pagesInput == "" ||
+    authorInput == "" ||
+    pagesInput < 1 ||
+    pagesInput > 16000
+  ) {
     alert("Please fill all fields!");
-    return true;
   } else {
     let book = new Book(titleInput, authorInput, pagesInput, checkInput);
     myLibrary.push(book);
     render();
-    //clear the input values
   }
 }
 
@@ -49,56 +53,48 @@ function render() {
   const table = document.getElementById("display");
   const rowsNumber = table.rows.length;
   //delete old table
-while (table.rows.length > 1) {
-  table.deleteRow(1); 
+  while (table.rows.length > 1) {
+    table.deleteRow(1);
   }
 
-
   //insert updated row and cells
   const length = myLibrary.length;
-  for (let i = 0; i <= length; i++) {
+  for (let i = 0; i < 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.innerHTML = myLibrary[i].title;
-    authorCell.innerHTML = myLibrary[i].author;
-    pagesCell.innerHTML = myLibrary[i].pages;
-
-    //deleteCell.innerHTML = button[i]
+    titleCell.textContent = myLibrary[i].title;
+    authorCell.textContent = myLibrary[i].author;
+    pagesCell.textContent = myLibrary[i].pages;
 
     //add and wait for action for read/unread button
     const changeButton = document.createElement("button");
-    changeButton.id = i;
+
     changeButton.className = "btn btn-success";
     wasReadCell.appendChild(changeButton);
     let readStatus = "";
 
-    myLibrary[i].check == true 
-      ? (readStatus = "Yes") 
-      : (readStatus = "No");
+    myLibrary[i].check ? (readStatus = "Yes") : (readStatus = "No");
 
     changeButton.innerText = readStatus;
 
     changeButton.addEventListener("click", function () {
-      myLibrary[i].check == true
-        ? (myLibrary[i].check = false)
-        : (myLibrary[i].check = true);
+      myLibrary[i].check = !myLibrary[i].check;
 
       render();
     });
     //add delete button to every row and render again
     const button = document.createElement("button");
-    button.id = i;
     deleteCell.appendChild(button);
     button.className = "btn btn-warning";
-    button.innerHTML = "Delete";
+    button.textContent = "Delete";
     button.addEventListener("click", function () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
       myLibrary.splice(i, 1);
       render();
+      alert(`You've deleted title: ${myLibrary[i].title}`);
     });
   }
 }