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ramiroaznar/index.html

Created September 24, 2017 18:28
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Get User Geolocation with CARTO.js
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index.html
<!DOCTYPE html>
<html>
<head>
<title>Get User Geolocation with CARTO.js</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
<link rel="shortcut icon" href="http://cartodb.com/assets/favicon.ico" />
<link rel="stylesheet" href="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/themes/css/cartodb.css" />
<script src="https://cartodb-libs.global.ssl.fastly.net/cartodb.js/v3/3.15/cartodb.js"></script>
<style>
html, body, #map {
height: 100%;
padding: 0;
margin: 0;
}
</style>
</head>
<body>
<div id="map"></div>
<script>
function main() {
// Try HTML5 geolocation
if(navigator.geolocation) {
navigator.geolocation.getCurrentPosition(function(position) {
var lat = position.coords.latitude,
lng = position.coords.longitude,
query = "SELECT 1 as cartodb_id, 'You are here' as message, ST_Transform(CDB_LatLng(" + lat + ", " + lng + "), 3857) as the_geom_webmercator",
style = "#layer{marker-width: 7; marker-fill: red; marker-line-width: 0.5; marker-line-color: white; text-name: [message]; text-face-name: 'Open Sans Bold'; text-size: 12; text-fill: #FFFFFF; text-halo-fill: fadeout(#000000, 30%); text-halo-radius: 2; text-allow-overlap: true; text-placement: point; text-placement-type: simple; text-dy: 10;}";
console.log(lat, lng, query, style);
var map = L.map('map', {
zoomControl: false,
center: [lat, lng],
zoom: 9
});
// add basemap
L.tileLayer('http://{s}.basemaps.cartocdn.com/light_all/{z}/{x}/{y}.png', {attribution: '&copy; <a href="http://www.openstreetmap.org/copyright">OpenStreetMap</a> contributors, &copy; <a href="http://cartodb.com/attributions">CARTO</a>'}).addTo(map);
// add cartodb layer
cartodb.createLayer(map, {
user_name: 'ramirocartodb',
type: 'cartodb',
sublayers: [{
sql: query,
cartocss: style,
}]
}, {https: true}).addTo(map)
.done(function(layer){
var sublayer = layer.getSubLayer(0);
console.log(sublayer);
});
});
} else {
// Browser doesn't support Geolocation
alert("Geolocation is disabled");
}
}
window.onload = main;
</script>
</body>
</html>
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