<link href="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css" rel="stylesheet" id="bootstrap-css">
<script src="//maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script>
<script src="//cdnjs.cloudflare.com/ajax/libs/jquery/3.2.1/jquery.min.js"></script>
<!------ Include the above in your HEAD tag ---------->
<div id="map-canvas"></div>
<script src="https://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false" type="text/javascript"></script>
// if HTML DOM Element that contains the map is found...
if (document.getElementById('map-canvas')){
// Coordinates to center the map
var myLatlng = new google.maps.LatLng(28.632681,77.208162);
// Other options for the map, pretty much selfexplanatory
var mapOptions = {
zoom: 14,
center: myLatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
// Attach a map to the DOM Element, with the defined settings
var map = new google.maps.Map(document.getElementById("map-canvas"), mapOptions);
}