クリック時にポリゴン情報を表示
ユーザーがポリゴンをクリックすると、詳細情報を含むポップアップが表示されます。
<!DOCTYPE html><html><head><meta charset="utf-8" /><title>クリック時にポリゴン情報を表示</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>.mapboxgl-popup {max-width: 400px;font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;}</style><div id="map"></div><script> mapboxgl.accessToken = '<your access token here>';var map = new mapboxgl.Map({container: 'map',style: 'mapbox://styles/mapbox/streets-v11',center: [-100.04, 38.907],zoom: 3}); map.on('load', function() {// Add a layer showing the state polygons.map.addLayer({'id': 'states-layer','type': 'fill','source': {'type': 'geojson','data':'https://d2ad6b4ur7yvpq.cloudfront.net/naturalearth-3.3.0/ne_110m_admin_1_states_provinces_shp.geojson'},'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 mapboxgl.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>