How do I get a decimal latitude / longitude from the Nokia Maps API?

Question

The coordinate of a marker is only updated during the dragend event, so if you want to track the intermediate locations, you'll have to a re-calculate the current target location during the drag event using the map.pixelToGeo() method. You can reference the moving marker as the target of the current event i.e. evt.target

The evt.target.coordinate of the Marker i.e. the coordinate property returns a formatted latitude/longitude.
The evt.target.coordinate.latitude and evt.target.coordinate.longitude give the coordinates in decimal degrees.

Here is a working example - you'll need to substitute in your own app id and token to get it to work of course.

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
    <head>
        <meta http-equiv="X-UA-Compatible" content="IE=7; IE=EmulateIE9; IE=EmulateIE10;"/>
        <base href="http://developer.here.com/apiexplorer/examples/api-for-js/events/map-object-events-displayed.html" />
        <meta http-equiv="content-type" content="text/html; charset=UTF-8"/>
        <title>Nokia Maps API for JavaScript Example: Map Object events</title>
        <meta name="description" content="Adding event listeners to objects on the map"/>
        <meta name="keywords" content="mapobjectevents, map, display, object, events"/>
        <!-- For scaling content for mobile devices, setting the viewport to the width of the device-->
        <meta name=viewport content="initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>

        <!-- By default we add ?with=all to load every package available, it's better to change this parameter to your use case. Options ?with=maps|positioning|places|placesdata|directions|datarendering|all -->
        <script type="text/javascript" charset="UTF-8" src="http://api.maps.nokia.com/2.2.4/jsl.js?with=all"></script>


    </head>
    <body>
        <div id="mapContainer" style="width:70%; height:70%; left:0; top:50; position: absolute;"></div>
        <div id="uiContainer" style="left:0; top:0; position: absolute;" >HELLO</div>
        <script type="text/javascript" id="exampleJsSource">
// <![CDATA[    
/////////////////////////////////////////////////////////////////////////////////////
// Don't forget to set your API credentials
//
// Replace with your appId and token which you can obtain when you 
// register on http://api.developer.nokia.com/ 
//
            nokia.Settings.set( "appId", "YOUR APP ID GOES HERE"); 
            nokia.Settings.set( "authenticationToken", "YOUR AUTHENTICATION TOKEN GOES HERE");

/////////////////////////////////////////////////////////////////////////////////////   

// Get the DOM node to which we will append the map
var mapContainer = document.getElementById("mapContainer");
// Create a map inside the map container DOM node
var map = new nokia.maps.map.Display(mapContainer, {
    // Initial center and zoom level of the map
    center: [52.51, 13.4],
    zoomLevel: 7,
    // We add the behavior component to allow panning / zooming of the map
    components:[new nokia.maps.map.component.Behavior()]
});



// Create a default listener for events that will just log a message.
var defaultHandler = function (evt) {

    if (evt.target instanceof nokia.maps.map.Marker) {

        //console.log(evt);

        var div = document.getElementById("uiContainer");
        if (evt.type = "dragend"){
            div.innerHTML = evt.type + " Formated: " + evt.target.coordinate  + " Decimal: " + evt.target.coordinate.latitude + ", " + evt.target.coordinate.longitude;
        }
        if (evt.type = "drag"){
            var coordinate = map.pixelToGeo(evt.displayX + evt.target.anchor.x, evt.displayY + evt.target.anchor.y);
            div.innerHTML = evt.type + " Formated: " + coordinate  + " Decimal: " + coordinate.latitude + ", " + coordinate.longitude;
        }
    }

    if (evt.target instanceof nokia.maps.map.Spatial) {
        /* Prevent other event listeners from being triggered
         * For more details see  nokia.maps.dom.Event
         */
        evt.stopImmediatePropagation();
    }
};

/* Adding event listeners one by one to a map object is not very
 * efficient therefore we have created a shortcut method 
 * to add multiple eventlisteners to an object using the "eventListener" property
 */

// Template with all listeners to be registered.
var listeners = {
    // type: [(listener, useCapture, namespaceURI)(, listener, useCapture, namespaceURI)(, ...)]
    "dragstart": [defaultHandler, false, null],
    "drag": [defaultHandler, false, null],
    "dragend": [defaultHandler, false, null]
}; 

// Create image marker object
var imageMarker = new nokia.maps.map.Marker(
    [52.88745, 13.43246],
    {
        $name: "Image Marker",
        eventListener: listeners,
        icon: "../../res/markerHouse.png",
        anchor: new nokia.maps.util.Point(35, 89),
        draggable: true
    }
);

// Add event listeners to the marker
imageMarker.addListeners(listeners);
map.objects.add(imageMarker);


// ]]>
        </script>
    </body>
</html>