Get started

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    <script>

      const map = new ol.Map({ target: "map" });

      map.setView(
        new ol.View({
          center: ol.proj.fromLonLat([-25, 25]), // Starting location [longitude, latitude]
          zoom: 2
        })
      );

      const accessToken = "YOUR_ACCESS_TOKEN";

      const basemapId = "arcgis/outdoor";

      const basemapURL = `https://basemapstyles-api.arcgis.com/arcgis/rest/services/styles/v2/styles/${basemapId}?token=${accessToken}`;

      olms.apply(map, basemapURL).then(() => {
        // Add Esri attribution
        // Learn more in https://esriurl.com/attribution
        const source = map.getLayers().item(0).getSource();
        const poweredByEsriString = "Powered by <a href='https://www.esri.com/en-us/home' target='_blank'>Esri</a> | ";

        const attributionFn = source.getAttributions();
        if (attributionFn) {
          source.setAttributions((ViewStateLayerStateExtent) => {
            return [poweredByEsriString, ...attributionFn(ViewStateLayerStateExtent)];
          });
        }
        else source.setAttributions(poweredByEsriString);
      });

    </script>