<html lang='en'> <head> <meta charset='utf-8' /> <link href='fullcalendar/main.css' rel='stylesheet' /> <script src='fullcalendar/main.js'></script> <script> document.addEventListener('DOMContentLoaded', function() { var calendarEl = document.getElementById('calendar'); var calendar = new FullCalendar.Calendar(calendarEl, { initialView: 'dayGridMonth' }); calendar.render(); }); </script> </head> <body> <div id='calendar'></div> </body> </html>