JavaScript Maps SDK

Filter symbols by toggling a list

Filter a set of symbols based on a property value in the data. 


<!doctype html>
<html lang="en">
    <head>
        <meta charset="utf-8" />
        <link rel="stylesheet" href="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.css" />
        <script src="https://maps-sdk.trimblemaps.com/v4/trimblemaps-4.2.3.js"></script>
        <style>
            body { margin: 0; padding: 0; }

            html,body,#map {
                height: 100%;
            }
            .filter-group {
        font: 12px/20px 'Helvetica Neue', Arial, Helvetica, sans-serif;
        font-weight: 600;
        position: absolute;
        top: 10px;
        right: 10px;
        z-index: 1;
        border-radius: 3px;
        width: 120px;
        color: #fff;
      }

      .filter-group input[type='checkbox']:first-child + label {
        border-radius: 3px 3px 0 0;
      }

      .filter-group label:last-child {
        border-radius: 0 0 3px 3px;
        border: none;
      }

      .filter-group input[type='checkbox'] {
        display: none;
      }

      .filter-group input[type='checkbox'] + label {
        background-color: #3386c0;
        display: block;
        cursor: pointer;
        padding: 10px;
        border-bottom: 1px solid rgba(0, 0, 0, 0.25);
      }

      .filter-group input[type='checkbox'] + label {
        background-color: #3386c0;
        text-transform: capitalize;
      }

      .filter-group input[type='checkbox'] + label:hover,
      .filter-group input[type='checkbox']:checked + label {
        background-color: #4ea0da;
      }

      .filter-group input[type='checkbox']:checked + label:before {
        content: '✔';
        margin-right: 5px;
      }
        </style>
    </head>
    <body>
        <div id="map"></div>
        <div id="filter-group" class="filter-group"></div>

        <script>
 const places = {
        type: 'FeatureCollection',
        features: [
          {
            type: 'Feature',
            properties: {
              icon: 'theatre',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.038659, 38.931567],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'theatre',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.003168, 38.894651],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'bar',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.090372, 38.881189],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'bicycle',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.052477, 38.943951],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'music',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.031706, 38.914581],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'music',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.020945, 38.878241],
            },
          },
          {
            type: 'Feature',
            properties: {
              icon: 'music',
            },
            geometry: {
              type: 'Point',
              coordinates: [-77.007481, 38.876516],
            },
          },
        ],
      };

      const filterGroup = document.getElementById('filter-group');
      TrimbleMaps.setAPIKey('YOUR_API_KEY_HERE');

      const map = new TrimbleMaps.Map({
        container: 'map',
       style: TrimbleMaps.Common.Style.TRANSPORTATION,
        center: [-77.04, 38.907],
        zoom: 11.15,
      });

      map.on('load', () => {
        // Add a GeoJSON source containing place coordinates and information.
        map.addSource('places', {
            'type': 'geojson',
            'data': places
        });

        places.features.forEach((feature) => {
            const symbol = feature.properties['icon'];
            const layerID = `poi-${symbol}`;

            // Add a layer for this symbol type if it hasn't been added already.
            if (!map.getLayer(layerID)) {
                map.addLayer({
                    'id': layerID,
                    'type': 'symbol',
                    'source': 'places',
                    'layout': {
                        'icon-image': `${symbol}_15`,
                        'icon-overlap': 'always'
                    },
                    'filter': ['==', 'icon', symbol]
                });

                // Add checkbox and label elements for the layer.
                const input = document.createElement('input');
                input.type = 'checkbox';
                input.id = layerID;
                input.checked = true;
                filterGroup.appendChild(input);

                const label = document.createElement('label');
                label.setAttribute('for', layerID);
                label.textContent = symbol;
                filterGroup.appendChild(label);

                // When the checkbox changes, update the visibility of the layer.
                input.addEventListener('change', (e) => {
                    map.setLayoutProperty(
                        layerID,
                        'visibility',
                        e.target.checked ? 'visible' : 'none'
                    );
                });
            }
        });
    });

    </script>
  </body>
</html>
Last updated June 26, 2025.