JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="http://arshaw.com/js/fullcalendar-1.5.3/fullcalendar/fullcalendar.css">
<script src="http://www.arshaw.com/js/fullcalendar-1.5.3/fullcalendar/fullcalendar.min.js"></script>
<script src="http://arshaw.com/js/fullcalendar-1.5.4/fullcalendar/gcal.js"></script>
<div style="border:solid 2px red;">
        <div id='calendar'></div>
</div>

JavaScript

$(document).ready(function() {

    var getEvents = function cltEvents(isLoading, view) {
        if (!isLoading) {
            var events = $('#calendar').fullCalendar('clientEvents');
            console.log(events.length);
        }
    };

    $('#calendar').fullCalendar({
        events: 'https://www.google.com/calendar/feeds/wrchapin40gmail.com/public/basic',
        loading: getEvents
    });
});