changes to render, saving, and naming

Author: HilolaRustam

debugging/book-library/script.js

@@ -9,38 +9,34 @@ if (localStorage.getItem("myLibrary")) {
   render();
 });
 function populateStorage() {
-  if (myLibrary.length == 0) {
-    let book1 = new Book("Robinson Crusoe", "Daniel Defoe", "252", true);
-    let book2 = new Book("The Old Man and the Sea", "Ernest Hemingway", "127", true);
+  if (myLibrary.length === 0) {
+    let book1 = new Book("Robinson 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();
   }
 }
 
-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)
+//check the right input from forms and if its ok -> add the new book 
 //via Book function and start render function
 function submit() {
-  if (
-    title.value == null ||
-    title.value == "" ||
-    author.value == null ||
-    author.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);
+    const title = titleInput.value.trim(); 
+    const author = authorInput.value.trim();
+    const pages = pagesInput.value.trim();
+
+   if (!title || !author || !pages || isNaN(pages) || pages <=0) {
+    alert("Please fill all fields correctly!");
+    return;
+  } 
+    let book = new Book(title, author, Number(pages), readCheckBox.checked);
     myLibrary.push(book);
     render();
-  }
+  
 }
 
 class Book {
@@ -53,53 +49,46 @@ class Book {
 }
 
 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 tableBody = document.querySelector("#display tbody");
+  tableBody.innerHTML = "";
+  
   //insert updated row and cells
-  let length = myLibrary.length;
-  for (let i = 0; i < length; i++) {
-    let row = table.insertRow(-1);
+  for (let i = 0; i < myLibrary.length; i++) {
+    let row = tableBody.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 == true) {
-      readStatus = "Yes";
-    } else {
-      readStatus = "No";
-    }
-    changeBut.innerText = readStatus;
+    titleCell.textContent= myLibrary[i].title;
+    authorCell.textContent = myLibrary[i].author;
+    pagesCell.textContent = myLibrary[i].pages;
+  
+       let toggleBtn = document.createElement("button");
+    toggleBtn.className = "btn btn-success";
+    toggleBtn.textContent = myLibrary[i].check ? "Yes" : "No";
+    wasReadCell.appendChild(toggleBtn);
 
-    changeBut.addEventListener("click", function () {
+    toggleBtn.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 () {
-      alert(`You've deleted title: ${myLibrary[i].title}`);
+     let delBtn = document.createElement("button");
+    delBtn.className = "btn btn-warning";
+    delBtn.textContent = "Delete";
+    deleteCell.appendChild(delBtn);
+
+    delBtn.addEventListener("click", function () {
+      if(confirm(`Are you sure you want to delete " ${myLibrary[i].title}"?`)){
       myLibrary.splice(i, 1);
       render();
+    }
     });
   }
-}             
+  //  Save updated library to localStorage
+  localStorage.setItem("myLibrary", JSON.stringify(myLibrary));
+}
+