Esri Leaflet
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Leaflet Control.Layers

This sample demonstrates how to pass ArcGIS Services to Leaflet's native Control.Layers which allows users to switch between different base layers and switch overlays on/off.

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8" />
  <title>Leaflet Control.Layers</title>
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />

  <!-- Load Leaflet from CDN -->
  <link rel="stylesheet" href="https://unpkg.com/leaflet@1.7.1/dist/leaflet.css"
    integrity="sha512-xodZBNTC5n17Xt2atTPuE1HxjVMSvLVW9ocqUKLsCC5CXdbqCmblAshOMAS6/keqq/sMZMZ19scR4PsZChSR7A=="
    crossorigin=""/>
  <script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
    integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
    crossorigin=""></script>

  <!-- Load Esri Leaflet from CDN -->
  <script src="https://unpkg.com/esri-leaflet@3.0.8/dist/esri-leaflet.js"
    integrity="sha512-E0DKVahIg0p1UHR2Kf9NX7x7TUewJb30mxkxEm2qOYTVJObgsAGpEol9F6iK6oefCbkJiA4/i6fnTHzM6H1kEA=="
    crossorigin=""></script>

  <!-- Load Esri Leaflet Vector from CDN -->
  <script src="https://unpkg.com/esri-leaflet-vector@3.1.2/dist/esri-leaflet-vector.js"
    integrity="sha512-SnA/TobYvMdLwGPv48bsO+9ROk7kqKu/tI9TelKQsDe+KZL0TUUWml56TZIMGcpHcVctpaU6Mz4bvboUQDuU3w=="
    crossorigin=""></script>

  <style>
    body { margin:0; padding:0; }
    #map { position: absolute; top:0; bottom:0; right:0; left:0; }
  </style>
</head>
<body>

<div id="map"></div>

<script>
  var gray = L.esri.Vector.vectorBasemapLayer('ArcGIS:LightGray', {
    apikey: apiKey // Replace with your API key - https://developers.arcgis.com
  });

  var states = L.esri.featureLayer({
    url: 'https://sampleserver6.arcgisonline.com/arcgis/rest/services/Census/MapServer/3',
    style: function (feature) {
      return { color: '#bada55', weight: 2 };
    }
  });

  var map = L.map('map', {
    center: [39, -97.5],
    zoom: 4,
    layers: [gray, states]
  });

  var baseLayers = {
    Grayscale: gray,
    Newspaper: L.esri.Vector.vectorBasemapLayer('ArcGIS:Newspaper', {
      apikey: apiKey // Replace with your API key - https://developers.arcgis.com
    })
  };

  var overlays = {
    'U.S. States': states
  };

  // https://leafletjs.com/reference.html#control-layers
  L.control.layers(baseLayers, overlays).addTo(map);
</script>

</body>
</html>