diff --git a/debugging/book-library/index.html b/debugging/book-library/index.html
index 23acfa71e..959a8e9b6 100644
--- a/debugging/book-library/index.html
+++ b/debugging/book-library/index.html
@@ -1,4 +1,4 @@
-
+
@@ -31,7 +31,7 @@ Library
Library
/>
Library
/>Read
@@ -91,6 +91,8 @@ Library
+
+
diff --git a/debugging/book-library/script.js b/debugging/book-library/script.js
index 75ce6c1d3..d9382f736 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 (e) {
populateStorage();
@@ -6,98 +6,110 @@ window.addEventListener("load", function (e) {
});
function populateStorage() {
- if (myLibrary.length == 0) {
- let book1 = new Book("Robison Crusoe", "Daniel Defoe", "252", true);
- let book2 = new Book(
+ // Seed with a couple of books if library is empty
+ if (myLibrary.length === 0) {
+ const book1 = new Book("Robinson Crusoe", "Daniel Defoe", 252, true);
+ const 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);
}
}
-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 checkInput = 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!");
+function addBook() {
+ const title = titleInput.value.trim();
+ const author = authorInput.value.trim();
+ const pagesRaw = pagesInput.value.trim();
+ const pages = Number(pagesRaw);
+
+ // Validate AFTER trimming, so whitespace-only input is rejected too
+ if (!title || !author || !pagesRaw || !Number.isFinite(pages) || pages <= 0) {
+ alert("Please fill all fields with valid values!");
return false;
- } else {
- let book = new Book(title.value, title.value, pages.value, check.checked);
- library.push(book);
- render();
}
+
+ const book = new Book(title, author, pages, checkInput.checked);
+ myLibrary.push(book);
+
+ // clear form inputs
+ titleInput.value = "";
+ authorInput.value = "";
+ pagesInput.value = "";
+ checkInput.checked = false;
+
+ render();
+ return true;
}
-function Book(title, author, pages, check) {
+function Book(title, author, pages, read) {
this.title = title;
this.author = author;
- this.pages = pages;
- this.check = check;
+ this.pages = pages; // stored as a Number now, not a trimmed string
+ // store as boolean under a descriptive property
+ this.read = !!read;
}
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";
- }
- changeBut.innerText = readStatus;
-
- changeBut.addEventListener("click", function () {
- myLibrary[i].check = !myLibrary[i].check;
+ const table = document.getElementById("display");
+ const tbody = table.getElementsByTagName("tbody")[0];
+
+ // Clear existing rows in one operation instead of removing one at a time
+ tbody.innerHTML = "";
+
+ myLibrary.forEach((book) => {
+ const row = document.createElement("tr");
+
+ const titleCell = document.createElement("td");
+ titleCell.textContent = book.title;
+ row.appendChild(titleCell);
+
+ const authorCell = document.createElement("td");
+ authorCell.textContent = book.author;
+ row.appendChild(authorCell);
+
+ const pagesCell = document.createElement("td");
+ pagesCell.textContent = book.pages;
+ row.appendChild(pagesCell);
+
+ const wasReadCell = document.createElement("td");
+ const changeBut = document.createElement("button");
+ changeBut.className = "btn btn-sm btn-outline-primary";
+ changeBut.textContent = book.read ? "Yes" : "No";
+ changeBut.addEventListener("click", () => {
+ book.read = !book.read;
render();
});
+ wasReadCell.appendChild(changeBut);
+ row.appendChild(wasReadCell);
- //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: ${myLibrary[i].title}`);
- myLibrary.splice(i, 1);
- render();
+ const deleteCell = document.createElement("td");
+ const delBut = document.createElement("button");
+ delBut.className = "btn btn-sm btn-danger";
+ delBut.textContent = "Delete";
+ delBut.addEventListener("click", () => {
+ if (confirm(`Delete "${book.title}"?`)) {
+ // Look up by object identity, not by closure-captured index,
+ // so this stays correct even if myLibrary is ever reordered
+ // by something other than a full render().
+ const idx = myLibrary.indexOf(book);
+ if (idx === -1) return;
+ myLibrary.splice(idx, 1);
+ render();
+ }
});
- }
+ deleteCell.appendChild(delBut);
+ row.appendChild(deleteCell);
+
+ tbody.appendChild(row);
+ });
}
diff --git a/debugging/book-library/style.css b/debugging/book-library/style.css
index 302950cb8..b47cd9eee 100644
--- a/debugging/book-library/style.css
+++ b/debugging/book-library/style.css
@@ -1,19 +1,16 @@
-.form-group {
- width: 400px;
- height: 300px;
- align-self: left;
- padding-left: 20px;
+#toast {
+ position: fixed;
+ bottom: 1rem;
+ left: 50%;
+ transform: translateX(-50%);
+ background: #333;
+ color: #fff;
+ padding: 0.5rem 1rem;
+ border-radius: 0.25rem;
+ opacity: 0;
+ pointer-events: none;
+ transition: opacity 0.3s ease;
}
-
-.btn {
- display: block;
-}
-
-.form-check-label {
- padding-left: 20px;
- margin: 5px 0px 5px 0px;
-}
-
-button.btn-info {
- margin: 20px;
+#toast.show {
+ opacity: 1;
}