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/v3.3.0/mapbox-gl.css" rel="stylesheet">
<script src="https://api.mapbox.com/mapbox-gl-js/v3.3.0/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>
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