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script.js
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script.js
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const table = {
caption: document.querySelector("caption"),
head: document.querySelector("thead"),
body: document.querySelector("tbody"),
}
const buttonAdd = document.querySelector("#add");
let myLibrary = [];
if (localStorage.getItem("myLibrary")) {
JSON.parse(localStorage.getItem("myLibrary")).forEach(o => {
let book = new Book(...Object.values(o));
myLibrary.push(book);
});
}
buttonAdd.addEventListener("click", handleButtonAdd);
window.addEventListener("unload", e => localStorage.setItem("myLibrary", JSON.stringify(myLibrary)));
function Book(title, author, pages, read) {
this.title = title;
this.author = author;
this.pages = pages;
this.read = read;
}
Book.prototype.info = function() {
return this.title + " by " + this.author + ", " +
this.pages + " pages, " + (this.read ? "read" : "not read yet");
}
Book.prototype.toggle = function() {
this.read = !this.read;
}
function render() {
table.caption.textContent = `Your Library: ${myLibrary.length} book(s)`;
if (myLibrary.length) {
table.head.classList.remove("hidden");
} else {
table.head.classList.add("hidden");
}
while (table.body.firstChild) {
table.body.removeChild(table.body.firstChild);
}
myLibrary.forEach((book, index) => {
let tr = document.createElement("tr");
// Data attribute
tr.dataset.index = index;
// Book info
[
"-",
book.title,
book.author,
book.pages,
book.read ? "v" : "x",
].forEach((d, i) => {
let td = document.createElement("td");
if (i == 0 || i == 4) {
let btn = document.createElement("button");
btn.textContent = d;
if (i == 4) {
btn.classList.add("read");
btn.addEventListener("click", handleButtonRead);
} else {
btn.classList.add("remove");
btn.addEventListener("click", handleButtonRemove);
}
td.appendChild(btn);
} else {
td.textContent = d;
}
tr.appendChild(td);
});
table.body.appendChild(tr);
});
}
function handleButtonRemove(e) {
let index = +e.target.parentNode.parentNode.dataset.index;
myLibrary.splice(index, 1);
render();
}
function handleButtonRead(e) {
let index = +e.target.parentNode.parentNode.dataset.index;
myLibrary[index].toggle();
render();
}
function handleButtonAdd(e) {
const form = e.target.parentNode.firstChild.nextSibling;
let title = form.querySelector("#title");
let author = form.querySelector("#author")
let pages = form.querySelector("#pages")
let read = form.querySelector("#yes")
if (form.classList.contains("hidden")) {
title.value = "";
author.value = "";
pages.value = "";
read.checked = true;
form.classList.remove("hidden");
} else {
title = title.value.trim();
author = author.value.trim();
pages = +pages.value;
read = read.checked;
form.classList.add("hidden");
if (!title || !author || !pages || pages <= 0) {
return;
}
myLibrary.push(new Book(capitalize(title), capitalize(author), pages, read));
render();
}
}
function capitalize(text) {
return text.split(/\s+/).map(w => w.charAt(0).toUpperCase() + w.slice(1).toLowerCase()).join(" ");
}
render();