diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71..a8ba76bb 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,20 +1,13 @@
-
+
-
-
+ Book Library
+
-
-
+
+
@@ -31,42 +24,35 @@ Library
+ required>
+ required>
+ required>
+ onclick="submitBook(event);">
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d..38766f02 100644
--- a/debugging/book-library/script.js
+++ b/debugging/book-library/script.js
@@ -1,46 +1,61 @@
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(
- "The Old Man and the Sea",
- "Ernest Hemingway",
- "127",
- true
- );
- myLibrary.push(book1);
- myLibrary.push(book2);
- render();
+ if (myLibrary.length === 0) {
+ const book1 = new Book("Robison Crusoe", "Daniel Defoe", 252, true);
+ const book2 = new Book("The Old Man and the Sea", "Ernest Hemingway", 127, 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() {
- 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, title.value, pages.value, check.checked);
- library.push(book);
- render();
+const titleEl = document.getElementById("title");
+const authorEl = document.getElementById("author");
+const pagesEl = document.getElementById("pages");
+const checkEl = document.getElementById("check");
+
+// Add book from form
+function submitBook(event) {
+ // Prevent page reload
+ event.preventDefault();
+
+ const titleVal = titleEl.value.trim();
+ const authorVal = authorEl.value.trim();
+ const pagesRaw = pagesEl.value.trim();
+
+ // Check if pages input is a positive whole number
+ if (!/^\d+$/.test(pagesRaw)) {
+ alert("Please enter a valid positive whole number for pages!");
+ return;
+ }
+
+ const pagesVal = Number(pagesRaw);
+
+ if (!titleVal || !authorVal) {
+ alert("Please fill all fields!");
+ return;
+ }
+
+ if (pagesVal <= 0) {
+ alert("Please enter a realistic positive number of pages!");
+ return;
}
+
+ // Add book to library
+
+ const book = new Book(titleVal, authorVal, pagesVal, checkEl.checked);
+ myLibrary.push(book);
+ render();
+
+ // Clear form
+ titleEl.value = "";
+ authorEl.value = "";
+ pagesEl.value = "";
+ checkEl.checked = false;
}
function Book(title, author, pages, check) {
@@ -51,53 +66,56 @@ 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;
-
- //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 == false) {
- readStatus = "Yes";
- } else {
- readStatus = "No";
+ const table = document.getElementById("display");
+ const tbody = table.querySelector("tbody");
+
+ // Clear existing rows
+ tbody.innerHTML = "";
+
+ myLibrary.forEach((book, i) => {
+ const row = tbody.insertRow();
+
+ // keep all cells in one place
+ const titleCell = row.insertCell(0);
+ const authorCell = row.insertCell(1);
+ const pagesCell = row.insertCell(2);
+ const checkCell = row.insertCell(3);
+ const delCell = row.insertCell(4); // delete button cell
+
+ titleCell.textContent = book.title;
+ authorCell.textContent = book.author;
+ pagesCell.textContent = book.pages;
+
+ // use helper function for read button
+ createReadButton(checkCell, i);
+
+ // use helper function for delete button
+ createDeleteCell(delCell, i);
+ });
+}
+
+function createDeleteCell(cell, index) {
+ const deleteBtn = document.createElement("button");
+ deleteBtn.textContent = "Delete";
+ deleteBtn.addEventListener("click", () => {
+ if (index > -1){
+ myLibrary.splice(index, 1);
+ render();
}
- changeBut.innerText = readStatus;
-
- changeBut.addEventListener("click", function () {
- myLibrary[i].check = !myLibrary[i].check;
- render();
- });
-
- //add delete button to every row and render again
- let delButton = document.createElement("button");
- delBut.id = i + 5;
- deleteCell.appendChild(delBut);
- delBut.className = "btn btn-warning";
- delBut.innerHTML = "Delete";
- delBut.addEventListener("clicks", function () {
- alert(`You've deleted title: ${myLibrary[i].title}`);
- myLibrary.splice(i, 1);
- render();
- });
- }
+ });
+ cell.appendChild(deleteBtn);
}
+
+// helper function for read button
+function createReadButton(cell, index) {
+ const readBtn = document.createElement("button");
+ readBtn.textContent = myLibrary[index].check ? "Read" : "Not Read";
+ readBtn.className = myLibrary[index].check ? "btn btn-success" : "btn btn-secondary";
+
+ readBtn.addEventListener("click", () => {
+ myLibrary[index].check = !myLibrary[index].check;
+ render();
+ });
+
+ cell.appendChild(readBtn);
+}
\ No newline at end of file