FGiP/index.html at master · CoreDevo/FGiP · GitHub

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<!DOCTYPE html>
<html>
<head>
    <style>
        #map {
            height: 100%;
            width: 100%;
            left: 0;
            position: absolute;
            top: 0;
        }
    </style>
</head>
<body>
<div id="map"></div>
<script>
    var trap = "http://i.imgur.com/HzPa48c.png";

    function initMap() {
        var mapDiv = document.getElementById('map');
        var map = new google.maps.Map(mapDiv, {
            center: {lat: 43.6532, lng: -79.3832},
            zoom: 8
        });
        update(function(data){
            var newData = JSON.parse(data)['data'];
            for (var index in newData) {
                var axis = new google.maps.LatLng(newData[index]['latitude'], newData[index]['longitude']);
                var id = newData[index]['_id'];
                addMarker(axis, id, map);
            }
        });
    }

    function update(callback) {
        var xhr = new XMLHttpRequest();
        xhr.open("GET", "queryLocation");
        var data;
        xhr.onload = function() {
            data = xhr.response;
            callback(data);
        }
        xhr.send();
    }

    function addMarker(axis, title, map){
        var contentString =  "<h3>ID : " + title + "</h3>"
        var marker = new google.maps.Marker({
            position: axis,
            title: title,
            icon: trap
        });
        var infowindow = new google.maps.InfoWindow({
            content: contentString
        });
        marker.addListener('click', function() {
            infowindow.open(map, marker);
        });
        marker.setMap(map);
    }

</script>
<script src="https://maps.googleapis.com/maps/api/js?callback=initMap"
        async defer></script>
</body>
</html>