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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/skeleton/2.0.4/skeleton.min.css">
<link rel="stylesheet" href="styles.css">
<title>Book List</title>
</head>
<body>
<div class="container">
<h1>Add Book</h1>
<form id="book-form">
<div>
<label for="title">Title</label>
<input type="text" class="u-full-width" id="title">
</div>
<div>
<label for="title">Author</label>
<input type="text" class="u-full-width" id="author">
</div>
<div>
<label for="title">ISBN</label>
<input type="text" class="u-full-width" id="isbn">
</div>
<div>
<input type="submit" value="submit" class="u-full-width">
</div>
</form>
<hr>
<table class="u-full-width">
<thead>
<tr>
<th>Title</th>
<th>Author</th>
<th>ISBN</th>
<th></th>
</tr>
</thead>
<tbody id="book-list"></tbody>
</table>
</div>
<script src="appEs6.js"></script>
</body>
</html>
.success,
.error {
color: white;
padding: 5px;
margin: 5px 0 15px 0;
}
.success {
background-color: green;
}
.error {
background-color: red;
}
class Book {
constructor(title, author, isbn) {
this.title = title;
this.author = author;
this.isbn = isbn;
}
}
class UI {
addBookToList(book) {
const list = document.getElementById("book-list");
// Create tr element
const row = document.createElement("tr");
// Insert cols
row.innerHTML = `
<td>${book.title}</td>
<td>${book.author}</td>
<td>${book.isbn}</td>
<td><a href="#" class="delete">X</a></td>
`;
list.appendChild(row);
}
showAlert(message, className) {
// Create div
const div = document.createElement("div");
// Add class
div.className = `alert ${className}`;
// Add text
div.appendChild(document.createTextNode(message));
// Get parent
const container = document.querySelector(".container");
// Get Form
const form = document.querySelector("#book-form");
// Insert alert
container.insertBefore(div, form);
// Timeout after 3 seconds
setTimeout(function () {
document.querySelector(".alert").remove();
}, 3000);
}
deleteBook(target) {
// Instantiate UI
const ui = new UI();
if (target.className === "delete") {
target.parentElement.parentElement.remove();
ui.showAlert("Book removed", "success");
}
}
clearFields() {
document.getElementById("title").value = "";
document.getElementById("author").value = "";
document.getElementById("isbn").value = "";
}
}
// Local Storage class
class Store {
static getBooks() {
let books;
if (localStorage.getItem("books") === null) {
books = [];
} else {
books = JSON.parse(localStorage.getItem("books"));
}
return books;
}
static displayBooks() {
const books = Store.getBooks();
books.forEach(function (book) {
const ui = new UI();
ui.addBookToList(book);
});
}
static addBook(book) {
const books = Store.getBooks();
books.push(book);
localStorage.setItem("books", JSON.stringify(books));
}
static removeBook(isbn) {
const books = Store.getBooks();
books.forEach(function (book, index) {
if (book.isbn === isbn) {
books.splice(index, 1);
}
});
localStorage.setItem("books", JSON.stringify(books));
}
}
// DOM load event
document.addEventListener("DOMContentLoaded", Store.displayBooks);
// Event Listener for add
document.getElementById("book-form").addEventListener("submit", function (e) {
const title = document.getElementById("title").value,
author = document.getElementById("author").value,
isbn = document.getElementById("isbn").value;
// Instantiate book
const book = new Book(title, author, isbn);
// Instantiate UI
const ui = new UI();
// Validate
if (title === "" || author === "" || isbn === "") {
// Show error
ui.showAlert("Please fill in all fields.", "error");
} else {
// Add book to list
ui.addBookToList(book);
// Add to local store
Store.addBook(book);
// Show success
ui.showAlert("Book added!", "success");
// Clear fields
ui.clearFields();
}
e.preventDefault();
});
// Event listener for delete
document.getElementById("book-list").addEventListener("click", function (e) {
// Instantiate UI
const ui = new UI();
// Remove book
ui.deleteBook(e.target);
// Remove from local storage
const isbn = e.target.parentElement.previousElementSibling.textContent;
Store.removeBook(isbn);
e.preventDefault();
});
Also see: Tab Triggers