Google Map JavaScript API

For some reasons, I cannot embed Google Map JavaScirpt API sample code (below) on Ghost blog platform. So for now, I just set up a virtual host on an Apache server here, Google Map JavaScript API lab.

<div id="map"></div>
<script>
var map;
function initMap() {
  map = new google.maps.Map(document.getElementById('map'), {
    center: {lat: -34.397, lng: 150.644},
    zoom: 8
  });
}
</script>
<script async defer src="https://maps.googleapis.com/maps/api/js?callback=initMap">
</script>