Create a Draggable Point

Create a draggable GeoJSON point on a map layer.

const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [11.39085, 47.27574],
        zoom: 12,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    const geojson = {
        type: 'FeatureCollection',
        features: [{
            type: 'Feature',
            geometry: { type: 'Point', coordinates: [11.39085, 47.27574] }
        }]
    };

    map.on('load', () => {
        map.addSource('point', { type: 'geojson', data: geojson });

        map.addLayer({
            id: 'point',
            type: 'circle',
            source: 'point',
            paint: { 'circle-radius': 10, 'circle-color': '#3887be' }
        });

        let isDragging = false;

        map.on('mousedown', 'point', (e) => {
            e.preventDefault();
            isDragging = true;
            map.getCanvas().style.cursor = 'grabbing';
        });

        map.on('mousemove', (e) => {
            if (!isDragging) return;
            geojson.features[0].geometry.coordinates = [e.lngLat.lng, e.lngLat.lat];
            map.getSource('point').setData(geojson);
            document.getElementById('coords').textContent = `${e.lngLat.lng.toFixed(5)}, ${e.lngLat.lat.toFixed(5)}`;
        });

        map.on('mouseup', () => {
            if (!isDragging) return;
            isDragging = false;
            map.getCanvas().style.cursor = '';
        });

        map.on('mouseleave', 'point', () => {
            if (!isDragging) map.getCanvas().style.cursor = '';
        });

        map.on('mouseenter', 'point', () => {
            if (!isDragging) map.getCanvas().style.cursor = 'grab';
        });
    });

<!DOCTYPE html>
<html lang="en">
<head>
    <title>Create a Draggable Point – Maptoolkit Maps JS</title>
    <meta property="og:description" content="Create a draggable GeoJSON point on a map layer." />
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1">
    <script src="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.js"></script>
    <link rel="stylesheet" href="https://unpkg.com/@maptoolkit/maps@11.0.0-beta.2/dist/maptoolkit.css" />
    <style>
        html, body { width: 100%; height: 100%; margin: 0; padding: 0; }
        #map { width: 100%; height: 100%; }
        #coords {
            position: absolute;
            bottom: 30px;
            left: 10px;
            background: white;
            padding: 8px 14px;
            border-radius: .4rem;
            font-family: sans-serif;
            font-size: 13px;
        }
    </style>
</head>
<body>
<div id="map"></div>
<div id="coords">Drag the point</div>
<script>
    const API_KEY = 'toursprung';

    const map = new maptoolkit.Map({
        container: 'map',
        style: `https://static.maptoolkit.net/styles/toursprung/terrain.json?api_key=${API_KEY}`,
        center: [11.39085, 47.27574],
        zoom: 12,
        attributionControl: { compact: false }
    });

    map.addControl(new maptoolkit.NavigationControl(), 'top-right');

    const geojson = {
        type: 'FeatureCollection',
        features: [{
            type: 'Feature',
            geometry: { type: 'Point', coordinates: [11.39085, 47.27574] }
        }]
    };

    map.on('load', () => {
        map.addSource('point', { type: 'geojson', data: geojson });

        map.addLayer({
            id: 'point',
            type: 'circle',
            source: 'point',
            paint: { 'circle-radius': 10, 'circle-color': '#3887be' }
        });

        let isDragging = false;

        map.on('mousedown', 'point', (e) => {
            e.preventDefault();
            isDragging = true;
            map.getCanvas().style.cursor = 'grabbing';
        });

        map.on('mousemove', (e) => {
            if (!isDragging) return;
            geojson.features[0].geometry.coordinates = [e.lngLat.lng, e.lngLat.lat];
            map.getSource('point').setData(geojson);
            document.getElementById('coords').textContent = `${e.lngLat.lng.toFixed(5)}, ${e.lngLat.lat.toFixed(5)}`;
        });

        map.on('mouseup', () => {
            if (!isDragging) return;
            isDragging = false;
            map.getCanvas().style.cursor = '';
        });

        map.on('mouseleave', 'point', () => {
            if (!isDragging) map.getCanvas().style.cursor = '';
        });

        map.on('mouseenter', 'point', () => {
            if (!isDragging) map.getCanvas().style.cursor = 'grab';
        });
    });
</script>
</body>
</html>

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