Add static text labels

Add static text labels to the center of features. This is not the same as fitting labels dynamically. The labels will collide as you zoom out.

Use dark colors for code blocksCopy
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<html>
  <head>
    <meta charset="utf-8" />
    <title>Add static text labels</title>
    <meta name="viewport" content="initial-scale=1, maximum-scale=1, user-scalable=no" />
    <link rel="stylesheet" href="https://unpkg.com/leaflet@1.9.4/dist/leaflet.css" crossorigin="" />
    <script src="https://unpkg.com/leaflet@1.9.4/dist/leaflet.js" crossorigin=""></script>

    <!-- Load Esri Leaflet from CDN -->
    <script src="https://unpkg.com/esri-leaflet@3.0.12/dist/esri-leaflet.js"></script>

    <!-- Load Esri Leaflet Vector from CDN -->
    <script src="https://unpkg.com/esri-leaflet-vector@4.2.5/dist/esri-leaflet-vector.js" crossorigin=""></script>
    <script>
    </script>
    <style>
      html,
      body,
      #map {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
        font-family: Arial, Helvetica, sans-serif;
        font-size: 14px;
        color: #323232;
      }
    </style>
  </head>
  <body>
    <style>
      .label {
        font-weight: 700;
        text-transform: uppercase;
        text-align: center;
        margin-top: -1em;
      }

      .label div {
        position: relative;
        left: -50%;
        top: 10px;
        text-shadow: 0px 2px 1px rgba(255, 255, 255, 0.85);
      }
    </style>

    <div id="map"></div>
    <script>
      const accessToken = "YOUR_ACCESS_TOKEN";

      const map = L.map("map").setView([37.428, -121.978], 9);

      L.esri.Vector.vectorBasemapLayer("arcgis/oceans/base", {
        token: accessToken
      }).addTo(map);

      const earthquakes = L.esri
        .featureLayer({
          url: "https://sampleserver6.arcgisonline.com/arcgis/rest/services/Earthquakes_Since1970/MapServer/0"
        })
        .addTo(map);

      const labels = {};

      earthquakes.on("createfeature", function (e) {
        const id = e.feature.id;
        const feature = earthquakes.getFeature(id);
        const center = feature.getLatLng();
        const label = L.marker(center, {
          icon: L.divIcon({
            iconSize: null,
            className: "label",
            html: "<div>" + e.feature.properties.name + "</div>"
          })
        }).addTo(map);
        labels[id] = label;
      });

      earthquakes.on("addfeature", function (e) {
        const label = labels[e.feature.id];
        if (label) {
          label.addTo(map);
        }
      });

      earthquakes.on("removefeature", function (e) {
        const label = labels[e.feature.id];
        if (label) {
          map.removeLayer(label);
        }
      });
    </script>
  </body>
</html>

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