Create a draggable Marker | Mapbox GL JS

Drag the Marker to a new location on a map and populate its coordinates in a display.

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Create a draggable Marker</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
<link href="https://api.mapbox.com/mapbox-gl-js/v2.13.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v2.13.0/mapbox-gl.js"></script>
<style>
body { margin: 0; padding: 0; }
#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<style>
.coordinates {
background: rgba(0, 0, 0, 0.5);
color: #fff;
position: absolute;
bottom: 40px;
left: 10px;
padding: 5px 10px;
margin: 0;
font-size: 11px;
line-height: 18px;
border-radius: 3px;
display: none;
}
</style>
 
<div id="map"></div>
<pre id="coordinates" class="coordinates"></pre>
 
<script>
	// TO MAKE THE MAP APPEAR YOU MUST
	// ADD YOUR ACCESS TOKEN FROM
	// https://account.mapbox.com
	mapboxgl.accessToken = 'YOUR_MAPBOX_ACCESS_TOKEN';
const coordinates = document.getElementById('coordinates');
const map = new mapboxgl.Map({
container: 'map',
// Choose from Mapbox's core styles, or make your own style with Mapbox Studio
style: 'mapbox://styles/mapbox/streets-v12',
center: [0, 0],
zoom: 2
});
 
const marker = new mapboxgl.Marker({
draggable: true
})
.setLngLat([0, 0])
.addTo(map);
 
function onDragEnd() {
const lngLat = marker.getLngLat();
coordinates.style.display = 'block';
coordinates.innerHTML = `Longitude: ${lngLat.lng}<br />Latitude: ${lngLat.lat}`;
}
 
marker.on('dragend', onDragEnd);
</script>
 
</body>
</html>