Test Leaflet Install using tile.osm.org by d3noob

index.html

<!DOCTYPE html>
<html>
<head>
    <title>Simple Leaflet Map</title>
    <meta charset="utf-8" />
    <link 
        rel="stylesheet" 
        href="//cdn.leafletjs.com/leaflet-0.7/leaflet.css"
    />
</head>
<body>
    <div id="map" style="width: 600px; height: 400px"></div>

    <script
        src="//cdn.leafletjs.com/leaflet-0.7/leaflet.js">
    </script>

    <script>

		var map = L.map('map').setView([51.505, -0.09], 13);

		L.tileLayer('//{s}.tile.osm.org/{z}/{x}/{y}.png', {
			maxZoom: 18,
			attribution: 'Map data &copy; <a href="//openstreetmap.org">OpenStreetMap</a> contributors, <a href="//creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="//openstreetmap.org">Openstreetmap</a>'
		}).addTo(map);


		L.marker([51.5, -0.09]).addTo(map)
			.bindPopup("<b>Hello world!</b><br />I am a popup.").openPopup();

		L.circle([51.508, -0.11], 500, {
			color: 'red',
			fillColor: '#f03',
			fillOpacity: 0.5
		}).addTo(map).bindPopup("I am a circle.");

		L.polygon([
			[51.509, -0.08],
			[51.503, -0.06],
			[51.51, -0.047]
		]).addTo(map).bindPopup("I am a polygon.");


		var popup = L.popup();

		function onMapClick(e) {
			popup
				.setLatLng(e.latlng)
				.setContent("You clicked the map at " + e.latlng.toString())
				.openOn(map);
		}

		map.on('click', onMapClick);


/*
        var map = L.map('map').setView([-41.2858, 174.78682], 14);
        mapLink = 
            '<a href="//openstreetmap.org">OpenStreetMap</a>';
        L.tileLayer(
            '//{s}.tile.openstreetmap.org/{z}/{x}/{y}.png', {
            attribution: '&copy; ' + mapLink + ' Contributors',
            maxZoom: 18,
            }).addTo(map);
*/
    </script>
</body>
</html>