Mouse Position

This example uses OpenLayers v4.0.1. The latest is v.

#### Mouse Position

Projection
Precision

Example of a mouse position control, outside the map.

Example of a mouse position control, outside the map.

Related API documentation:

- ol.Map
,
- ol.View
,
- ol.control
,
- ol.control.MousePosition
,
- ol.coordinate
,
- ol.layer.Tile
,
- ol.proj
,
- ol.source.OSM

Copy Edit
Mouse Position Example of a mouse position control, outside the map. var mousePositionControl = new ol.control.MousePosition({ coordinateFormat: ol.coordinate.createStringXY(4), projection: 'EPSG:4326', // comment the following two lines to have the mouse position // be placed within the map. className: 'custom-mouse-position', target: document.getElementById('mouse-position'), undefinedHTML: '&nbsp;' }); var map = new ol.Map({ controls: ol.control.defaults({ attributionOptions: /** @type {olx.control.AttributionOptions} */ ({ collapsible: false }) }).extend([mousePositionControl]), layers: [ new ol.layer.Tile({ source: new ol.source.OSM() }) ], target: 'map', view: new ol.View({ center: [0, 0], zoom: 2 }) }); var projectionSelect = document.getElementById('projection'); projectionSelect.addEventListener('change', function(event) { mousePositionControl.setProjection(ol.proj.get(event.target.value)); }); var precisionInput = document.getElementById('precision'); precisionInput.addEventListener('change', function(event) { var format = ol.coordinate.createStringXY(event.target.valueAsNumber); mousePositionControl.setCoordinateFormat(format); }); <div id="map" class="map"></div> <div id="mouse-position"></div> <form> <label>Projection </label> <select id="projection"> <option value="EPSG:4326">EPSG:4326</option> <option value="EPSG:3857">EPSG:3857</option> </select> <label>Precision </label> <input id="precision" type="number" min="0" max="12" value="4"/> </form>

    <!DOCTYPE html>
    <html>
      <head>
        <title>Mouse Position</title>
        <link rel="stylesheet" href="https://openlayers.org/en/v4.0.1/css/ol.css" type="text/css">
        <!-- The line below is only needed for old environments like Internet Explorer and Android 4.x -->
        <script src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL"></script>
        <script src="https://openlayers.org/en/v4.0.1/build/ol.js"></script>
      </head>
      <body>
        <div id="map" class="map"></div>
        <div id="mouse-position"></div>
        <form>
          <label>Projection </label>
          <select id="projection">
            <option value="EPSG:4326">EPSG:4326</option>
            <option value="EPSG:3857">EPSG:3857</option>
          </select>
          <label>Precision </label>
          <input id="precision" type="number" min="0" max="12" value="4"/>
        </form>
        <script>
          var mousePositionControl = new ol.control.MousePosition({
            coordinateFormat: ol.coordinate.createStringXY(4),
            projection: 'EPSG:4326',
            // comment the following two lines to have the mouse position
            // be placed within the map.
            className: 'custom-mouse-position',
            target: document.getElementById('mouse-position'),
            undefinedHTML: '&nbsp;'
          });

          var map = new ol.Map({
            controls: ol.control.defaults({
              attributionOptions: /** @type {olx.control.AttributionOptions} */ ({
                collapsible: false
              })
            }).extend([mousePositionControl]),
            layers: [
              new ol.layer.Tile({
                source: new ol.source.OSM()
              })
            ],
            target: 'map',
            view: new ol.View({
              center: [0, 0],
              zoom: 2
            })
          });

          var projectionSelect = document.getElementById('projection');
          projectionSelect.addEventListener('change', function(event) {
            mousePositionControl.setProjection(ol.proj.get(event.target.value));
          });

          var precisionInput = document.getElementById('precision');
          precisionInput.addEventListener('change', function(event) {
            var format = ol.coordinate.createStringXY(event.target.valueAsNumber);
            mousePositionControl.setCoordinateFormat(format);
          });
        </script>
      </body>
    </html>