Interactivity

This example shows how to add a tooltip to features.

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<html>
  <head>
    <!-- FONT -->
    <link
      href="https://fonts.googleapis.com/css2?family=Open+Sans:wght@400;600&display=swap"
      rel="stylesheet"
    />

    <script src="https://unpkg.com/deck.gl@^8.4.0/dist.min.js"></script>
    <script src="https://unpkg.com/@deck.gl/carto@^8.4.0/dist.min.js"></script>
    
    <script src="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.js"></script>
    <link href="https://libs.cartocdn.com/mapbox-gl/v1.13.0/mapbox-gl.css" rel="stylesheet" />
  </head>

  <body style="margin: 0; padding: 0; font-family: 'Open Sans', sans-serif">
    <div id="map" style="width: 100vw; height: 100vh;"></div>
  </body>

  <script type="text/javascript">
    deck.carto.setDefaultCredentials({
      username: 'public',
      apiKey: 'default_public',
    });

    const deckgl = new deck.DeckGL({
      container: 'map',
      mapStyle: 'https://basemaps.cartocdn.com/gl/voyager-gl-style/style.json',

      initialViewState: {
        latitude: 0,
        longitude: 0,
        zoom: 1,
      },
      controller: true,

      layers: [
        new deck.carto.CartoSQLLayer({
          data: 'SELECT the_geom_webmercator, country_name FROM world_population_2015',
          getFillColor: [238, 77, 90],
          pointRadiusMinPixels: 4,
          pickable: true,
        }),
      ],
      getTooltip: ({ object }) =>
        object && {
          html: `
            <strong>Country</strong>: ${object.properties.country_name}<br/>
            <strong>Longitude</strong>: ${object.geometry.coordinates[0].toFixed(6)}<br/>
            <strong>Latitude</strong>: ${object.geometry.coordinates[1].toFixed(6)}
          `
        },
    });
  </script>
</html>