var map = new ol.Map
({ target: 'map',
   renderer: ["canvas"],  /* ["webgl", "canvas", "dom"] */
   view: new ol.View
   ({ zoom: 7,
      center: [288074, 6247982]
   }),
   controls: ol.control.defaults().extend
   ([ new ol.control.FullScreen()
   ]),
   layers: [new ol.layer.Tile(
   { source: new ol.source.Geoportail(apiKey, "GEOGRAPHICALGRIDSYSTEMS.MAPS")
   })]
});