demo/index.html

<!DOCTYPE html>
<html lang="en">
	<head>
		<title>Leaflet.heat demo</title>
		<link rel="stylesheet" href="https://unpkg.com/leaflet@1.5.1/dist/leaflet.css" integrity="sha512-xwE/Az9zrjBIphAcBb3F6JVqxf46+CDLwfLMHloNu6KEQCAWi6HcDUbeOfBIptF7tcCzusKFjFw2yuvEpDL9wQ==" crossorigin=""/>
		<script src="https://unpkg.com/leaflet@1.5.1/dist/leaflet.js" integrity="sha512-GffPMF3RvMeYyc1LWMHtK8EbPv0iNZ8/oTtHPx9/cc2ILxQ+u905qIwdpULaqDkyBKgOaB57QTMg7ztg8Jm2Og==" crossorigin=""></script>
		<style>
			#map { width: 800px; height: 600px; }
			body { font: 16px/1.4 "Helvetica Neue", Arial, sans-serif; }
			.ghbtns { position: relative; top: 4px; margin-left: 5px; }
			a { color: #0077ff; }
		</style>
	</head>
	<body>
		<p>
			A 10,000-point demo of <a href="https://github.com/Leaflet/Leaflet.heat">Leaflet.heat</a>, a tiny and fast Leaflet heatmap plugin.
			<a class="github-button" href="https://github.com/Leaflet/Leaflet.heat" data-icon="octicon-star" aria-label="Star Leaflet/Leaflet.heat on GitHub">Star</a>
		</p>

		<div id="map"></div>

		<script src="../dist/leaflet-heat.js"></script>

		<script src="https://leaflet.github.io/Leaflet.markercluster/example/realworld.10000.js"></script>
		<script>
			var map = L.map('map').setView([-37.87, 175.475], 12);

			var tiles = L.tileLayer('https://{s}.tile.osm.org/{z}/{x}/{y}.png', {
				attribution: '&copy; <a href="https://osm.org/copyright">OpenStreetMap</a> contributors',
			}).addTo(map);

			addressPoints = addressPoints.map(function (p) { return [p[0], p[1]]; });

			var heat = L.heatLayer(addressPoints).addTo(map);
		</script>
		<script async defer src="https://buttons.github.io/buttons.js"></script>
	</body>
</html>