Small example how to include Google maps into Joomla!
HTML part is simple:
<div id="map-canvas" style="width: 400px; height: 400px"></div> <script src="https://maps.googleapis.com/maps/api/js"></script>
Note here that I had to add width and height, otherwise maps refuses to show. Also, note that I added Google APIs.
JS:
/*global google*/ (function (){ "use strict"; var mapOptions, mapCanvas, map; mapOptions = { zoom: 6, center: { lat: -34.397, lng: 150.644}, mapTypeId: google.maps.MapTypeId.ROADMAP }; mapCanvas = document.getElementById('map-canvas'); if (!map) { map = new google.maps.Map(mapCanvas, mapOptions); } }());Live example: