map.html



<div id="map"></div>

/* Always set the map height explicitly to define the size of the div
* element that contains the map. */
#map {
height: 100%;
}
/* Optional: Makes the sample page fill the window. */
html, body {
height: 100%;
margin: 0;
padding: 0;
}

<!-- Replace the value of the key parameter with your own API key. -->
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyCkUOdZ5y7hMm0yrcCQoCvLwzdM6M8s5qk&callback=initMap" async defer></script>

<!DOCTYPE html>
<html>
<head>
    <title>Simple Map</title>
    <meta name="viewport" content="initial-scale=1.0">
    <meta charset="utf-8">
    <style>
        /* Always set the map height explicitly to define the size of the div
         * element that contains the map. */
        #map {
            height: 100%;
        }
        /* Optional: Makes the sample page fill the window. */
        html, body {
            height: 100%;
            margin: 0;
            padding: 0;
        }
    </style>
</head>
<body>
<div id="map"></div>
<script>
    var map;
    async function initMap() {
        map = new google.maps.Map(document.getElementById('map'), {
            center: {lat:  39.067981, lng: -105.680725 },
            zoom: 8
        });

        const url = 'https://hacksc-backend-1555207106499.appspot.com/cars';        //api endpoint

        const data = await fetch(url).then((data) => {return data.json()}).then((res) => {return res});

        console.log(data);

        for (var i = 0; i < data.length; i++) {
            let marker = await new google.maps.Marker({
                position: {
                    "lat": data[i].lat,
                    "lng": data[i].lon
                },
                map: map,
                title: (data[i].make + " " + data[i].model).toString()
            });

            await marker.setMap(map);
        }


    }
</script>
<script src="https://maps.googleapis.com/maps/api/js?key=AIzaSyAcx68ZlwaS0aWEWiW9mi-GMRkqjeEsNSg&callback=initMap"
        async defer></script>
</body>
</html>