Show polygon information on click
When a user clicks a polygon, show a Popup
containing more information.
<!DOCTYPE html><html><head><meta charset="utf-8" /><title>Show polygon information on click</title><meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" /><script src="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.js"></script><link href="https://cdn.jsdelivr.net/npm/@goongmaps/goong-js@1.0.9/dist/goong-js.css" rel="stylesheet" /><style> body { margin: 0; padding: 0; } #map { position: absolute; top: 0; bottom: 0; width: 100%; }</style></head><body><style>.goongjs-popup {max-width: 400px;font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;}</style><div id="map"></div><script>goongjs.accessToken = '8qzxZAuxcsctSlmOszInchP1A5GrmRBHJwCBCjO6';var map = new goongjs.Map({container: 'map',style: 'https://tiles.goong.io/assets/goong_map_web.json',center: [-100.04, 38.907],zoom: 3}); map.on('load', function () {// Add a source for the state polygons.map.addSource('states', {'type': 'geojson','data': 'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_110m_admin_1_states_provinces_shp.geojson'}); // Add a layer showing the state polygons.map.addLayer({'id': 'states-layer','type': 'fill','source': 'states','paint': {'fill-color': 'rgba(200, 100, 240, 0.4)','fill-outline-color': 'rgba(200, 100, 240, 1)'}}); // When a click event occurs on a feature in the states layer, open a popup at the// location of the click, with description HTML from its properties.map.on('click', 'states-layer', function (e) {new goongjs.Popup().setLngLat(e.lngLat).setHTML(e.features[0].properties.name).addTo(map);}); // Change the cursor to a pointer when the mouse is over the states layer.map.on('mouseenter', 'states-layer', function () {map.getCanvas().style.cursor = 'pointer';}); // Change it back to a pointer when it leaves.map.on('mouseleave', 'states-layer', function () {map.getCanvas().style.cursor = '';});});</script> </body></html>