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<!DOCTYPE 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 src = "../leaflet-include.js" > < / script >
< / head >
< body >
< p > This test is meant for testing the performance of doubleclick event handler in IE. See < a href = 'https://github.com/Leaflet/Leaflet/issues/4127' > #4127< / a > and < a href = 'https://github.com/Leaflet/Leaflet/issues/2820' > #2820< / a > < / p >
< div id = "map" > < / div >
< button id = "populate" > Populate with 100 more markers< / button > < div id = 'perf' > < / div >
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< script >
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var osmUrl = 'https://{s}.tile.openstreetmap.org/{z}/{x}/{y}.png',
osmAttrib = '© < a href = "https://www.openstreetmap.org/copyright" > OpenStreetMap< / a > contributors',
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osm = L.tileLayer(osmUrl, {maxZoom: 18, attribution: osmAttrib});
var map = L.map('map')
.setView([0, 0], 0)
.addLayer(osm);
var markers = new L.FeatureGroup();
function getEventHandler(i) {
return function(ev) { document.getElementById('perf').innerHTML = ('Event on marker ' + i + ': ' + ev.type); }
}
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function getRandomLatLng(llbounds) {
var s = llbounds.getSouth(),
n = llbounds.getNorth(),
w = llbounds.getWest(),
e = llbounds.getEast();
return L.latLng(
s + (Math.random() * (n - s)),
w + (Math.random() * (e - w))
)
}
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function populate() {
var start = performance ? performance.now() : 0;
for (var i = 0; i < 100 ; i + + ) {
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L.marker(getRandomLatLng(map.getBounds())).addTo(markers).on('dblclick', getEventHandler(i));
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}
var end = performance ? performance.now() : 0;
document.getElementById('perf').innerHTML = 'Adding 100 markers took ' + (end - start) + ' milliseconds.';
return false;
}
markers.addTo(map);
populate();
L.DomUtil.get('populate').onclick = populate;
function logEvent(e) { console.log(e.type); }
// map.on('click', logEvent);
// map.on('contextmenu', logEvent);
// map.on('movestart', logEvent);
// map.on('move', logEvent);
// map.on('moveend', logEvent);
// map.on('zoomstart', logEvent);
// map.on('zoomend', logEvent);
< / script >
< / body >
< / html >
