<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 ---------->
<script src="https://maps.googleapis.com/maps/api/js"></script>
<div id="map_canvas"></div>
html,
body,
#map_canvas {
height: 100%;
width: 100%;
margin: 0px;
padding: 0px
}
var markers = [];
var map;
var labels = 'ABCD';
var labelIndex = 0;
function initialize() {
map = new google.maps.Map(
document.getElementById("map_canvas"), {
center: new google.maps.LatLng(40.7127837, -74.0059413),
zoom: 11,
mapTypeId: google.maps.MapTypeId.ROADMAP
});
// New York, NY, USA (40.7127837, -74.0059413)
// Newark, NJ, USA (40.735657, -74.1723667)
// Jersey City, NJ, USA (40.72815749999999, -74.07764170000002)
// Bayonne, NJ, USA (40.6687141, -74.11430910000001)
addMarker({
lat: 40.7127837,
lng: -74.0059413
}, "red");
addMarker({
lat: 40.735657,
lng: -74.1723667
}, "green");
addMarker({lat:40.7281575, lng:-74.0776417}, "yellow");
addMarker({lat:40.6687141, lng:-74.1143091}, "orange");
}
google.maps.event.addDomListener(window, "load", initialize);
function addMarker(location, color) {
var marker = new google.maps.Marker({
position: location,
label: labels[labelIndex++ % labels.length],
icon: {url:'http://maps.google.com/mapfiles/ms/icons/'+color+'.png',
labelOrigin: new google.maps.Point(15,10)
},
map: map
});
markers.push(marker);
}