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lukas-h/map.html

Created July 6, 2017 13:20
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Leaflet map that gets geojson as a parameter
Raw
map.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>map</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://unpkg.com/[email protected]/dist/leaflet.css">
<script src="https://unpkg.com/[email protected]/dist/leaflet.js"></script>
<script src="http://stolpersteine-heilbronn.de/assets/js/Control.FullScreen.js"></script>
<style>
body {
padding: 0;
margin: 0;
}
html,
body,
#map {
height: 100%;
width: 100%;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
function getJson(url) {
var req = new XMLHttpRequest();
req.open("GET", url, false);
req.send(null);
return req.responseText;
}
var lat = 49.0, long = 11.0, path = null, zoom = 13;
var src = location.search;
src = src.substring(1, src.length);
if (src.length > 1) {
src = src.split('&');
console.log(src);
src.forEach(function (r) {
if (r.startsWith('src')) {
path = r.substring(4, r.length);
}
if (r.startsWith('lat')) {
lat = parseFloat(r.substring(4, r.length));
}
if (r.startsWith('long')) {
long = parseFloat(r.substring(5, r.length));
}
if (r.startsWith('zoom')) {
zoom = parseInt(r.substring(5, r.length));
}
});
} else {
console.log('no path to json');
}
var map = L.map('map', { closePopupOnClick: false }).setView([lat, long], zoom);
L.tileLayer('http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
attribution: '&copy; <a href="http://www.openstreetmap.org/">OSM</a>'
}).addTo(map);
if (path != null) {
var json = getJson(path);
json = JSON.parse(json);
L.geoJSON(json).addTo(map);
}
</script>
</body>
</html>
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