> 
> **Possible Duplicate:**  
> 
> [JavaScript Variable Scope](https://stackoverflow.com/questions/500431/javascript-variable-scope) 
> 
> 
> 

i have problem with my script, i want to get value lat, lng from pos function, but when i inspect element in console i get this error :

"Uncaught ReferenceError: lat is not defined TEST.html:30
(anonymous function)"

line 30 is : var latlng = new google.maps.LatLng (lat, lng);
This is my full code :

```
<script type="text/javascript">

navigator.geolocation.getCurrentPosition (function (pos){
  lat = pos.coords.latitude;
  lng = pos.coords.longitude;
});

  var directionsDisplay;
  var directionsService = new google.maps.DirectionsService();
  var map;
  var latlng = new google.maps.LatLng (lat, lng);
  var oceanBeach = new google.maps.LatLng(-6.2501199999999999,106.75937);

  function initialize() {
    directionsDisplay = new google.maps.DirectionsRenderer();
    var mapOptions = {
      zoom: 14,
      mapTypeId: google.maps.MapTypeId.ROADMAP,
      center: latlng
    }
    map = new google.maps.Map(document.getElementById("map_canvas"), mapOptions);
    directionsDisplay.setMap(map);
  }

  function calcRoute() {
    var selectedMode = document.getElementById("mode").value;
    var request = {
        origin: latlng,
        destination: oceanBeach,
        // Note that Javascript allows us to access the constant
        // using square brackets and a string value as its
        // "property."
        travelMode: google.maps.TravelMode[selectedMode]
    };
    directionsService.route(request, function(response, status) {
      if (status == google.maps.DirectionsStatus.OK) {
        directionsDisplay.setDirections(response);
      }
    });
  }
</script>

```