move slippy map

map/slippy/index-leaflet.html

@@ -0,0 +1,29 @@
+<script src="/javascript/leaflet/leaflet.js"></script>
+<link href="/javascript/leaflet/leaflet.css" rel="stylesheet"/>
+<div id="osm-map"></div>
+<script>
+// this file found on an expo laptop and put into the VCS in 2019
+// Where you want to render the map.
+var element = document.getElementById('osm-map');
+
+// Height has to be set. You can do this in CSS too.
+element.style = 'height:300px;';
+
+// Create Leaflet map on map element.
+var map = L.map(element);
+
+// Add OSM tile leayer to the Leaflet map.
+L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
+attribution: '&copy; <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
+}).addTo(map);
+
+// Target's GPS coordinates.
+// This is Budapest, why ?!
+var target = L.latLng('47.50737', '19.04611');
+
+// Set map's center to target with zoom 14.
+map.setView(target, 14);
+
+// Place a marker on the same location.
+L.marker(target).addTo(map);
+</script>