Draggable Marker

Display a moveable marker on a map

HTML

<link rel="stylesheet" href="https://js.api.here.com/v3/3.0/mapsjs-ui.css">
<!-- SCRIPTS -->
<script type="text/javascript" src="https://js.api.here.com/v3/3.0/mapsjs-core.js"></script>
<script type="text/javascript" src="https://js.api.here.com/v3/3.0/mapsjs-service.js"></script>
<script type="text/javascript" src="https://js.api.here.com/v3/3.0/mapsjs-ui.js"></script>
<script type="text/javascript" src="https://js.api.here.com/v3/3.0/mapsjs-mapevents.js"></script>

<!-- BODY -->
<h1>Draggable Marker</h1>
<p>This example displays a moveable map of <b>Boston</b>, including a marker. The marker can also be moved around the map.</p>
<hr/>
<div id="map" style="width: 600px; height: 400px; background: grey"></div>

CSS

code, h1, h2, h3{
  color: #124191;
  letter-spacing: -0.03em;
}
body {
  font-family:"Lucida Grande",Tahoma,sans-serif;
  color: rgb(102, 102, 102);
  font-size: 80%;
}
b, strong {
  color: black;
}
code {
  font-weight: 700;
  font-size: 120%;
}

JavaScript

/**
 * Adds a  draggable marker to the map..
 *
 * @param {H.Map} map                      A HERE Map instance within the
 *                                         application
 * @param {H.mapevents.Behavior} behavior  Behavior implements
 *                                         default interactions for pan/zoom
 */
function addDraggableMarker(map, behavior){

  var marker = new H.map.Marker({lat:42.35805, lng:-71.0636});
  // Ensure that the marker can receive drag events
  marker.draggable = true;
  map.addObject(marker);

  // disable the default draggability of the underlying map
  // when starting to drag a marker object:
  map.addEventListener('dragstart', function(ev) {
    var target = ev.target;
    if (target instanceof H.map.Marker) {
      behavior.disable();
    }
  }, false);


  // re-enable the default draggability of the underlying map
  // when dragging has completed
  map.addEventListener('dragend', function(ev) {
    var target = ev.target;
    if (target instanceof mapsjs.map.Marker) {
      behavior.enable();
    }
  }, false);

  // Listen to the drag event and move the position of the marker
  // as necessary
   map.addEventListener('drag', function(ev) {
    var target = ev.target,
        pointer = ev.currentPointer;
    if (target instanceof mapsjs.map.Marker) {
      target.setPosition(map.screenToGeo(pointer.viewportX, pointer.viewportY));
    }
  }, false);
}

/**
 * Boilerplate map initialization code starts below:
 */

//Step 1: initialize communication with the platform
var platform = new H.service.Platform({
  app_id: 'DemoAppId01082013GAL',
  app_code: 'AJKnXv84fjrb0KIHawS0Tg',
  useCIT: true,
  useHTTPS: true
});
var defaultLayers = platform.createDefaultLayers();

//Step 2: initialize a map - this map is centered over Boston
var map = new H.Map(document.getElementById('map'),
  defaultLayers.normal.map,{
  center: {lat:42.35805, lng:-71.0636},
  zoom: 12
});

//Step 3: make the map interactive
// MapEvents enables the event...