Create a draggable Marker | UNL Map JS Docs

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

Note

If you want to test this example, edit it in JSFiddle or CodePen and replace the "YOUR-OWN-API-KEY" and "YOUR-OWN-VPM-ID" placeholders with your actual api key and vpm id.

<!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" />
<script src="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.js"></script>
<link href="https://unpkg.com/unl-map-js@0.1.5/lib/unl-map-js.css" rel="stylesheet" />
<link
href="https://unpkg.com/maplibre-gl@2.1.9/dist/maplibre-gl.css"
rel="stylesheet"
/>
<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>
var coordinates = document.getElementById("coordinates");
var map = new UnlSdk.Map({
container: "map",
apiKey: "YOUR-OWN-API-KEY",
vpmId: "YOUR-OWN-VPM-ID",
center: [0, 0],
zoom: 2,
});
 
var marker = new UnlSdk.Marker({
draggable: true,
})
.setLngLat([0, 0])
.addTo(map);
 
function onDragEnd() {
var lngLat = marker.getLngLat();
coordinates.style.display = "block";
coordinates.innerHTML =
"Longitude: " + lngLat.lng + "<br />Latitude: " + lngLat.lat;
}
 
marker.on("dragend", onDragEnd);
</script>
 
</body>
</html>