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Last active April 26, 2016 01:36
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locate, query
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.block
license: Apache-2.0
Raw
index.html
<html>
<head>
<meta charset=utf-8 />
<title>HTML5 geolocation + Esri Leaflet</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<!-- Load Leaflet from CDN-->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/leaflet/1.0.0-rc.1/leaflet.css" />
<script src="https://cdn.jsdelivr.net/leaflet/1.0.0-rc.1/leaflet.js"></script>
<!-- Load Esri Leaflet from CDN -->
<script src="https://cdn.jsdelivr.net/leaflet.esri/2.0.0-beta.7/esri-leaflet.js"></script>
<style>
body { margin:0; padding:0; }
#map { position: absolute; top:0; bottom:0; right:0; left:0; }
</style>
</head>
<body>
<div id="map"></div>
<script>
// html5 geolocation requires a secure connection
if (window.location.protocol != "https:") {
window.location.protocol = "https";
}
var map = L.map('map').setView([34, -118], 10);
L.esri.basemapLayer('DarkGray').addTo(map);
// ask leaflet to use HTML5 to query the user location
map.locate();
// listen for the result of that asynchronous method
map.on('locationfound', function(evt) {
// construct a query object
var censusBlocks = L.esri.query({
url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/1'
});
// pass it the user's current location
censusBlocks.intersects(evt.latlng);
// execute the spatial query
censusBlocks.run(function(error, intersectingBlocks){
// add the GeoJson to the map
var blockLayer = L.geoJson(intersectingBlocks).addTo(map);
// and update the map extent
map.fitBounds(blockLayer.getBounds())
});
});
</script>
</body>
</html>
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