Boilerplate HTML to initialise calendar

<div class="container">
    <div id='calendar'></div>
</div>

<script src='https://cdn.jsdelivr.net/npm/fullcalendar@6.1.4/index.global.min.js'></script>
<script>

    document.addEventListener('DOMContentLoaded', function() {
    var calendarEl = document.getElementById('calendar');
    var calendar = new FullCalendar.Calendar(calendarEl, {
        initialView: 'dayGridMonth',
        events: {% include 'Name of Event JSON Web Template here' %}
    });
    calendar.render();
    });

</script>