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<template id="book-template">
  <li><span class="title"></span> &mdash; <span class="author"></span></li>

<template id="book-template-2">
  <li><span class="author"></span>'s classic novel <span class="title"></span></li>

<ul id="books"></ul>

<fieldset id="templates">
  <legend>Choose template</legend>
    <input type="radio" name="template" value="book-template" checked> Template One
    <input type="radio" name="template" value="book-template-2"> Template Two


                label {
  display: block;
  margin-bottom: 0.5rem;


                'use strict';

const books = [
  { title: 'The Great Gatsby', author: 'F. Scott Fitzgerald' },
  { title: 'A Farewell to Arms', author: 'Ernest Hemingway' },
  { title: 'Catch 22', author: 'Joseph Heller' }

function appendBooks(templateId) {
  const booksList = document.getElementById('books');
  const fragment = document.getElementById(templateId);
  // Clear out the content from the ul
  booksList.innerHTML = '';
  // Loop over the books and modify the given template
  books.forEach(book => {
    // Create an instance of the template content
    const instance = document.importNode(fragment.content, true);
    // Add relevant content to the template
    instance.querySelector('.title').innerHTML = book.title;
    instance.querySelector('.author').innerHTML =;
    // Append the instance ot the DOM

document.getElementById('templates').addEventListener('change', (event) => appendBooks(;