From Forum Nokia Wiki

ID	CS001161	Creation date	October 30, 2008
Platform	S60 5th Edition	Tested on devices
Category	Web Runtime (WRT)	Subcategory	S60 Platform Services

Keywords (APIs, classes, methods, functions): device.getServiceObject(), Service.Location

Overview

This code snippet demonstrates how to use the Location Service API of the Web Runtime to discover the location (latitude and longitude) of the device.

Source: script.js

var serviceObj = null;
 
window.onload = init;
 
// Initializes the widget
function init() {
    // Obtain the Location service object
    try {
        serviceObj = device.getServiceObject("Service.Location", "ILocation");
    } catch (ex) {
        alert("Service object cannot be found.");
        return;
    }
 
    // We are interested in basic location information (longitude, latitude
    // and altitude) only, so let's define the criteria respectively
    var criteria = new Object();
    criteria.LocationInformationClass = "BasicLocationInformation";
 
    // Obtain the location information (synchronous)
    var result = serviceObj.ILocation.GetLocation(criteria);
    var latitude = result.ReturnValue.Latitude;
    var longitude = result.ReturnValue.Longitude;
 
    // Display the location
    alert("Lat. " + latitude + ", Long. " + longitude);
}

Note: GetLocation() is a synchronous function, so it may block your widget for a while.

Postconditions

The current location (latitude and longitude) of the device is displayed.

Supplementary material

• You can test the location obtaining features in action in a simple, executable application into which this code snippet has been patched. The application is available for download at: Media:WRTStub_CS001161.zip
• You can examine all the changes that are required to implement the above mentioned features in an application. The changes are provided in unified diff and color-coded diff formats: Media:CS001161_Obtaining_location_information.diff.zip
• For general information on applying the patch, see Using Diffs.
• For unpatched stub applications, see Example stub.

See also

• Web Developer's Library: JavaScript Location Service API