Add live realtime data | Mapbox GL JS

Use realtime GeoJSON data streams to move a symbol on your map.
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Add live realtime data</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.1.1/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<div id="map"></div>
 
<script>
	// TO MAKE THE MAP APPEAR YOU MUST
	// ADD YOUR ACCESS TOKEN FROM
	// https://account.mapbox.com
	mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map',
style: 'mapbox://styles/mapbox/streets-v11',
zoom: 0
});
 
var url = 'https://wanderdrone.appspot.com/';
map.on('load', function () {
var request = new XMLHttpRequest();
window.setInterval(function () {
// make a GET request to parse the GeoJSON at the url
request.open('GET', url, true);
request.onload = function () {
if (this.status >= 200 && this.status < 400) {
// retrieve the JSON from the response
var json = JSON.parse(this.response);
 
// update the drone symbol's location on the map
map.getSource('drone').setData(json);
 
// fly the map to the drone's current location
map.flyTo({
center: json.geometry.coordinates,
speed: 0.5
});
}
};
request.send();
}, 2000);
 
map.addSource('drone', { type: 'geojson', data: url });
map.addLayer({
'id': 'drone',
'type': 'symbol',
'source': 'drone',
'layout': {
'icon-image': 'rocket-15'
}
});
});
</script>
 
</body>
</html>