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appes6.js
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appes6.js
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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');
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(msg, className) {
// create div
const div = document.createElement('div');
div.className = `alert ${className}`;
// add text
div.appendChild(document.createTextNode(msg));
// get parent
const container = document.querySelector('.container');
const form = document.querySelector('#book-form');
container.insertBefore(div, form);
setTimeout(function () {
document.querySelector('.alert').remove();
}, 3000);
}
deleteBook(target) {
if (target.className === 'delete') {
target.parentElement.parentElement.remove();
}
}
clearFields() {
document.getElementById('title').value = '';
document.getElementById('author').value = '';
document.getElementById('isbn').value = '';
}
}
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) {
console.log('found');
books.splice(index, 1);
}
});
localStorage.setItem('books', JSON.stringify(books));
}
}
document.addEventListener('DOMContentLoaded', Store.displayBooks);
document.getElementById('book-form').addEventListener('submit', function (e) {
e.preventDefault();
// get form values
const title = document.getElementById('title').value,
author = document.getElementById('author').value,
isbn = document.getElementById('isbn').value;
// instantiating new book
const book = new Book(title, author, isbn);
// instantiate UI
const ui = new UI();
if (title === '' || author === '' || isbn === '') {
ui.showAlert('Please fill in all fields', 'error');
} else {
ui.addBookToList(book);
// add book to LS
Store.addBook(book);
ui.showAlert('Book added!', 'success');
//clear field
ui.clearFields();
}
});
// event listener for delete
document.getElementById('book-list').addEventListener('click', function (e) {
e.preventDefault();
const ui = new UI();
Store.removeBook(e.target.parentElement.previousElementSibling.textContent);
ui.deleteBook(e.target);
ui.showAlert('Book has been deleted', 'success');
})