マウスポインタの座標を取得

ピクセル・緯度・経度の座標を使用して、ホバー時のマウス位置を表示します。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>マウスポインタの座標を取得</title>
<meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
<script src="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.js"></script>
<link href="https://api.mapbox.com/mapbox-gl-js/v1.6.1/mapbox-gl.css" rel="stylesheet" />
<style>
	body { margin: 0; padding: 0; }
	#map { position: absolute; top: 0; bottom: 0; width: 100%; }
</style>
</head>
<body>
<style type="text/css">
#info {
display: block;
position: relative;
margin: 0px auto;
width: 50%;
padding: 10px;
border: none;
border-radius: 3px;
font-size: 12px;
text-align: center;
color: #222;
background: #fff;
}
</style>
<div id="map"></div>
<pre id="info"></pre>
<script>
	mapboxgl.accessToken = '<your access token here>';
var map = new mapboxgl.Map({
container: 'map', // container id
style: 'mapbox://styles/mapbox/streets-v11',
center: [-74.5, 40], // starting position
zoom: 9 // starting zoom
});
 
map.on('mousemove', function(e) {
document.getElementById('info').innerHTML =
// e.point is the x, y coordinates of the mousemove event relative
// to the top-left corner of the map
JSON.stringify(e.point) +
'<br />' +
// e.lngLat is the longitude, latitude geographical position of the event
JSON.stringify(e.lngLat.wrap());
});
</script>
 
</body>
</html>