97 lines
3.0 KiB
HTML
97 lines
3.0 KiB
HTML
<!--
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See Also:
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https://leafletjs.com/examples/quick-start/
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https://leafletjs.com/examples.html
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-->
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<!doctype html>
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<html>
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<head>
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<meta charset="utf-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0" />
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<link
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rel="stylesheet"
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href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css"
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/>
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<style>
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#map-goes-here {
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height: 500px;
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width: 100%;
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}
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#info {
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margin: 10px 0;
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padding: 10px;
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border: 1px solid #ccc;
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background: #f9f9f9;
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}
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#controls {
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margin: 10px 0;
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}
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</style>
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</head>
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<body>
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<div id="map-goes-here"></div>
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<div id="info">placeholder</div>
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<div id="controls">
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<button id="zoom-fit">Fit All Points</button>
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<button id="zoom-us">Fit US</button>
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</div>
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<script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js"></script>
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<script>
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const chicago = [41.8781, -87.6298];
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const initialZoom = 12;
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// Leaflet makes a global variable "L" available.
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// this creates a map in the div above
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const map = L.map("map-goes-here").setView(chicago, initialZoom);
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// OSM base layer
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// DEMO change of base layer
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const watercolorURL =
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"https://tiles.stadiamaps.com/tiles/stamen_watercolor/{z}/{x}/{y}.jpg";
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const osmURL = "https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png";
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L.tileLayer(osmURL, {
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maxZoom: 19,
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attribution: "© OpenStreetMap contributors",
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}).addTo(map);
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// points could be loaded from GeoJSON or any other source
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// usage (below) does not depend on format
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const points = [
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{ lat: 41.8826, lng: -87.6233, name: "Millennium Park" },
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{ lat: 41.8916, lng: -87.6083, name: "Navy Pier" },
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{ lat: 41.8526, lng: -87.6188, name: "Museum of Science and Industry" },
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];
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// Add points to the map
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const markers = [];
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points.forEach((point) => {
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const marker = L.marker([point.lat, point.lng]).addTo(map);
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// adds a popup to the marker, can use HTML
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marker.bindPopup(`<strong>${point.name}</strong>`);
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// add custom events to markers in typical JS fashion
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marker.on("click", function () {
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const infoDiv = document.getElementById("info");
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infoDiv.textContent = `Selected Location: ${point.name}`;
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});
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markers.push(marker);
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});
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// example of binding button events to modify the map
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document.getElementById("zoom-fit").addEventListener("click", () => {
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const groupBounds = new L.featureGroup(markers).getBounds();
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map.fitBounds(groupBounds);
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});
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document.getElementById("zoom-us").addEventListener("click", () => {
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const usBounds = [
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[24.396308, -125.0], // Southwest corner (latitude, longitude)
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[49.384358, -66.93457], // Northeast corner (latitude, longitude)
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];
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map.fitBounds(usBounds);
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});
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</script>
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</body>
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</html>
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