leaflet
Version:
JavaScript library for mobile-friendly interactive maps
71 lines (56 loc) • 2.15 kB
HTML
<html>
<head>
<title>Leaflet debug page</title>
<link rel="stylesheet" href="../../dist/leaflet.css" />
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<link rel="stylesheet" href="../css/screen.css" />
<script type="text/javascript" src="../../build/deps.js"></script>
<script src="../leaflet-include.js"></script>
</head>
<body>
<div id="map"></div>
<script type="text/javascript">
/*
Can be used to profile performance of event system.
Start the test, start CPU profiler. Slowly move the
mouse around over the map for 20 seconds or so, stop
profiler and examine times for _on, _off and fire.
*/
var osmUrl = 'http://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
osmAttrib = '© <a href="http://openstreetmap.org/copyright">OpenStreetMap</a> contributors',
osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib});
var map = L.map('map')
.setView([50.5, 30.51], 15)
.addLayer(osm);
var markers = new L.FeatureGroup().addTo(map),
markerArr = [];
var clicks = 0;
markers.on('click', function(e) {
clicks++;
});
function shuffleMarkers() {
var marker;
if (markerArr.length > 2000) {
var i = Math.floor(Math.random() * markerArr.length);
marker = markerArr.splice(i, 1)[0];
markers.removeLayer(marker);
} else {
marker = L.marker(getRandomLatLng(map))
.on('mouseover', function() {
marker.setZIndexOffset(10000);
})
.on('mouseout', function() {
marker.setZIndexOffset(0);
})
.addTo(markers);
markerArr.push(marker);
}
}
while (markerArr.length < 2000) {
shuffleMarkers();
}
setInterval(shuffleMarkers, 20);
</script>
</body>
</html>