Map Graticule

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<!DOCTYPE html>
<html>
  <head>
    <title>Map Graticule</title>
    <link rel="stylesheet" href="https://openlayers.org/en/v5.3.0/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>

  </head>
  <body>
    <div id="map" class="map"></div>
    <script>
      import Graticule from 'ol/Graticule.js';
      import Map from 'ol/Map.js';
      import View from 'ol/View.js';
      import TileLayer from 'ol/layer/Tile.js';
      import {fromLonLat} from 'ol/proj.js';
      import OSM from 'ol/source/OSM.js';
      import Stroke from 'ol/style/Stroke.js';


      var map = new Map({
        layers: [
          new TileLayer({
            source: new OSM({
              wrapX: false
            })
          })
        ],
        target: 'map',
        view: new View({
          center: fromLonLat([4.8, 47.75]),
          zoom: 5
        })
      });

      // Create the graticule component
      var graticule = new Graticule({
        // the style to use for the lines, optional.
        strokeStyle: new Stroke({
          color: 'rgba(255,120,0,0.9)',
          width: 2,
          lineDash: [0.5, 4]
        }),
        showLabels: true
      });

      graticule.setMap(map);
    </script>
  </body>
</html>