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app.js
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app.js
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class Book{
constructor(title,author,genre){
this.title=title;
this.author=author;
this.genre=genre;
}
}
class Store{
static getBooks(){
let books;
if(localStorage.getItem('books')===null){
books=[];
}
else{
books=JSON.parse(localStorage.getItem('books'));
}
return books;
}
static addBook(book){
const books=Store.getBooks();
books.push(book);
localStorage.setItem('books',JSON.stringify(books));
}
static removeBook(genre){
const books=Store.getBooks();
books.forEach((book,index)=>{
if(book.genre===genre){
books.splice(index,1);
}
});
localStorage.setItem('books',JSON.stringify(books));
}
}
class UI{
static displayBooks(){
const books=Store.getBooks();
books.forEach((book)=>UI.addBookToList(book));
}
static addBookToList(book){
const list=document.querySelector('#book-list');
const row=document.createElement('tr');
row.innerHTML=`
<td>${book.title}</td>
<td>${book.author}</td>
<td>${book.genre}</td>
<td><a href="#" class="btn btn-danger btn-sm delete">X</a></td>
`;
list.appendChild(row);
}
static clearFields(){
document.querySelector('#title').value='';
document.querySelector('#author').value='';
document.querySelector('#genre').value='';
}
static deleteBook(el){
if(el.classList.contains('delete')){
el.parentElement.parentElement.remove();
}
}
}
document.addEventListener('DOMContentLoaded',UI.displayBooks);
document.querySelector('#book-form').addEventListener('submit',(e)=>{
e.preventDefault();
const title=document.querySelector('#title').value;
const author=document.querySelector('#author').value;
const genre=document.querySelector('#genre').value;
if(title===''||author===''||genre===''){
alert('Please fill every field');
}
else{
const book=new Book(title,author,genre);
UI.addBookToList(book);
Store.addBook(book);
UI.clearFields();
}
});
document.querySelector('#book-list').addEventListener('click',(e)=>{
UI.deleteBook(e.target);
Store.removeBook(e.target.parentElement.previousElementSibling.textContent);
});