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app.js
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app.js
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//BOOK CONSTRUCTOR
function Book(title, author, isbn){
this.title = title;
this.author = author;
this.isbn = isbn;
}
//UI CONSTRUCTOR
function UI(){
}
//Add Book to list
UI.prototype.addBookToList = function(book){
const list = document.getElementById('book-list');
//Create tr element
const row = document.createElement('tr');
//Insert columns into the tr element
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);
}
//Error Message PopUp
UI.prototype.showAlert = function(message, className){
//Create a div
const div = document.createElement('div');
//Add classes
div.className = `alert ${className}`;
//Add Text
div.appendChild(document.createTextNode(message))
//Get container
const container = document.querySelector('.container');
const form = document.querySelector('#book-form');
//Insert alert
container.insertBefore(div, form);
//Timeout after 3secs
setTimeout(function(){
document.querySelector('.alert').remove();
}, 3000);
};
//Delete Book
UI.prototype.deleteBook = function(target){
if(target.className == 'delete'){
target.parentElement.parentElement.remove()
}
}
//Clear fields prototype
UI.prototype.clearFields = function(){
document.getElementById('title').value = '';
document.getElementById('author').value = '';
document.getElementById('isbn').value = '';
}
//EVENT LISTENER FOR ADD BOOK
document.getElementById('book-form').addEventListener('submit', function(e){
//Get form values
const title = document.getElementById('title').value;
const author = document.getElementById('author').value;
const isbn = document.getElementById('isbn').value;
//Instantiating a book
const book = new Book(title, author, isbn);
//Instantiating UI
const ui = new UI()
//Validation
if(title === '' || author === '' || isbn === ''){
ui.showAlert('Please fill all the necessary fields', 'error')
}else{
//Add book to list
ui.addBookToList(book);
//Show success if book is added to the list
ui.showAlert(`${book.title} has been successfully added to your book list.`, 'success')
//Clear fields
ui.clearFields();
}
e.preventDefault()
})
//EVENT LISTENER FOR DELETE BOOK
document.getElementById('book-list').addEventListener('click', function(e){
//Instatiate UI
const ui = new UI();
//Delete the book
ui.deleteBook(e.target);
//Show message
ui.showAlert(`${book.title} has been removed successfully.`, 'success');
e.preventDefault();
})