Geolocation

Finding the user's position

<!DOCTYPE html>
<html>
<head>
<meta charset=utf-8 />
<title>Geolocation</title>
<meta name='viewport' content='initial-scale=1,maximum-scale=1,user-scalable=no' />
<script src='https://api.mapbox.com/mapbox.js/v3.1.0/mapbox.js'></script>
<link href='https://api.mapbox.com/mapbox.js/v3.1.0/mapbox.css' rel='stylesheet' />
<style>
  body { margin:0; padding:0; }
  #map { position:absolute; top:0; bottom:0; width:100%; }
</style>
</head>
<body>
<style>
.ui-button {
  background:#3887BE;
  color:#FFF;
  display:block;
  position:absolute;
  top:50%;left:50%;
  width:160px;
  margin:-20px 0 0 -80px;
  z-index:100;
  text-align:center;
  padding:10px;
  border:1px solid rgba(0,0,0,0.4);
  border-radius:3px;
  }
  .ui-button:hover {
    background:#3074a4;
    color:#fff;
    }
</style>

<div id='map'></div>
<a href='#' id='geolocate' class='ui-button'>Find me</a>

<script>
L.mapbox.accessToken = '<your access token here>';
var geolocate = document.getElementById('geolocate');
var map = L.mapbox.map('map', 'mapbox.streets');

var myLayer = L.mapbox.featureLayer().addTo(map);

// This uses the HTML5 geolocation API, which is available on
// most mobile browsers and modern browsers, but not in Internet Explorer
//
// See this chart of compatibility for details:
// http://caniuse.com/#feat=geolocation
if (!navigator.geolocation) {
    geolocate.innerHTML = 'Geolocation is not available';
} else {
    geolocate.onclick = function (e) {
        e.preventDefault();
        e.stopPropagation();
        map.locate();
    };
}

// Once we've got a position, zoom and center the map
// on it, and add a single marker.
map.on('locationfound', function(e) {
    map.fitBounds(e.bounds);

    myLayer.setGeoJSON({
        type: 'Feature',
        geometry: {
            type: 'Point',
            coordinates: [e.latlng.lng, e.latlng.lat]
        },
        properties: {
            'title': 'Here I am!',
            'marker-color': '#ff8888',
            'marker-symbol': 'star'
        }
    });

    // And hide the geolocation button
    geolocate.parentNode.removeChild(geolocate);
});

// If the user chooses not to allow their location
// to be shared, display an error message.
map.on('locationerror', function() {
    geolocate.innerHTML = 'Position could not be found';
});
</script>
to create your own custom map and use it in this example.
Use this example by copying its source into your own HTML page and replacing the Map ID with one of your own from your projects. Having trouble with JavaScript? Try out Codecademy or contact our support team.
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