githubmirror/Leaflet

debug/map/zoom-levels.html
54 строки2 KB
Jon Koops
Drop UMD and make ESM the default entrypoint (#8826)
17 мар 2025, 17:59
17 мар 2025, 17:597ac9875
<!doctype html>
<html lang="en">
	<head>
		<meta charset="utf-8" />
		<title>Leaflet debug page - Zoom Levels</title>
		<meta name="viewport" content="width=device-width, initial-scale=1, user-scalable=0" />
		<link rel="stylesheet" href="../../dist/leaflet.css" />
		<link rel="stylesheet" href="../css/screen.css" />
		<script type="importmap">
			{
				"imports": {
					"leaflet": "../../dist/leaflet-src.js"
				}
			}
		</script>
	</head>
	<body>
		<div id="map"></div>
		<script type="module">
			import {Map, LatLng, TileLayer, Control, Marker} from 'leaflet';

			// Test that changing between layers with differing zoomlevels also updates
			// the zoomlevels in the map + also

			const map = new Map('map').setView(new LatLng(50.5, 30.51), 0);
			const osmAttrib = '&copy; <a href="https://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors';
			const osm = new TileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {attribution: osmAttrib, minZoom: 0, maxZoom: 10}).addTo(map);
			const osm2 = new TileLayer('https://tile.openstreetmap.org/{z}/{x}/{y}.png', {attribution: 'Hello world', minZoom: 5, maxZoom: 18});

			new Control.Layers({
				'OSM (5-18)': osm2,
				'OSM (0-10)': osm
			}).addTo(map);

			new Control.Scale().addTo(map);

			function getRandomLatLng(llbounds) {
				const s = llbounds.getSouth();
				const n = llbounds.getNorth();
				const w = llbounds.getWest();
				const e = llbounds.getEast();

				return new LatLng(
					s + (Math.random() * (n - s)),
					w + (Math.random() * (e - w))
				);
			}

			for (let i = 0; i < 1000; i++) {
				new Marker(getRandomLatLng(map.getBounds())).addTo(map);
			}
		</script>
	</body>
</html>