made some modifications in the js file

Author: Fithi-Teklom

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>

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();