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HTML

              
                
<html>
<head>

  <meta charset="utf-8">
  <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no">
  <!--
  ArcGIS API for JavaScript, https://js.arcgis.com
  For more information about the views-switch-2d-3d sample, read the original sample description at developers.arcgis.com.
  https://developers.arcgis.com/javascript/latest/views-switch-2d-3d/index.html
  -->
<title>Switch view from 2D to 3D - 4.8</title>

  <style>
    html,
  body,
  #viewDiv {
    padding: 0;
    margin: 0;
    height: 100%;
    width: 100%;
  }

  #infoDiv{
    position: absolute;
    top: 15px;
    left: 60px;
  }

  #infoDiv input {
    border: none;
    box-shadow:  rgba(0, 0, 0, 0.3) 0px 1px 2px;
  }
</style>

  <link rel="stylesheet" href="https://js.arcgis.com/4.8/esri/css/main.css">
  <script src="https://js.arcgis.com/4.8/"></script>

  <script>
    require([
      "esri/views/MapView",
      "esri/views/SceneView",
      "esri/WebMap",
      "esri/WebScene",
      "esri/Map",
      "esri/layers/FeatureLayer",
      "esri/core/Collection",
      "esri/Graphic",
      "dojo/on",
      "dojo/domReady!"
    ], function (MapView, SceneView, WebMap, WebScene, Map, FeatureLayer, Collection, Graphic, on) {
      var switchButton = document.getElementById("switch-btn");

      var appConfig = {
        mapView: null,
        sceneView: null,
        activeView: null,
        container: "viewDiv"  // use same container for views
      };
      
      var map = new Map({
        basemap: 'streets',
        ground: 'world-elevation'
      });

      var initialViewParams = {
        zoom: 4,
        center: [-100.43759993450347, 40.772798684981126],
        container: appConfig.container
      };
      var webmap = new WebMap({
        map: map
      });
      
      var scene = new WebScene({
        map: map
      });
      
      var graphics = new Collection();
      
      var polyline = {
        type: "polyline",  // autocasts as new Polyline()
          paths: [
            [-111.30, 52.68],
            [-98, 49.5],
            [-93.94, 29.89]
          ]
      };
      
      var polylineSymbol = {
        type: "simple-line",  // autocasts as SimpleLineSymbol()
        color: [226, 119, 40],
        width: 4
      };
      
      var polylineAtt = {
        Name: "Keystone Pipeline",
        Owner: "TransCanada"
      };
      
      var polylineGraphic = new Graphic({
        geometry: polyline,
        symbol: polylineSymbol,
        attributes: polylineAtt
      });
      
      graphics.add(polylineGraphic);
      
      // Create an in-memory Feature Layer
      var fl = new FeatureLayer({
        id: 'test',
        source: graphics,
        fields: [
          {
            name: "ObjectID",
            alias: "ObjectID",
            type: "oid"
          },
          {
            name: "Owner",
            alias: "Owner",
            type: "string"
          },
          {
            name: "Name",
            alias: "Name",
            type: "string"
          }
        ],
        objectIdField: 'ObjectID',
        geometryType: 'polyline',
        spatialReference: { wkid: 4326 }
      });
      
      // Add the Feature Layer to the map
      map.add(fl);
      
      // create 2D view and and set active
      appConfig.mapView = createView(initialViewParams, "2d");
      appConfig.mapView.map = map;
      appConfig.activeView = appConfig.mapView;

      // create 3D view, won't initialize until container is set
      initialViewParams.container = null;
      initialViewParams.map = map;
      appConfig.sceneView = createView(initialViewParams, "3d");

      // switch the view between 2D and 3D each time the button is clicked
      switchButton.addEventListener("click", function(){
        switchView();
      });

      // Switches the view from 2D to 3D and vice versa
      function switchView(){
        var is3D = appConfig.activeView.type === "3d";

        // remove the reference to the container for the previous view
        appConfig.activeView.container = null;

        if (is3D){
          // if the input view is a SceneView, set the viewpoint on the
          // mapView instance. Set the container on the mapView and flag
          // it as the active view
          appConfig.mapView.viewpoint = appConfig.activeView.viewpoint.clone();
          appConfig.mapView.container = appConfig.container;
          appConfig.activeView = appConfig.mapView;
          switchButton.value = "3D";
          
          // When we go back into 2D, re-add the Feature Layer again
          console.log('mapp add');
          map.add(fl);
        } else {
          // Switching to 3D, so we will remove that FeatureLayer, listen for the
          // layerview-destroy event before switching, this way we know it has been
          // removed from the map

          appConfig.sceneView.viewpoint = appConfig.activeView.viewpoint.clone();
          appConfig.sceneView.container = appConfig.container;
          appConfig.activeView = appConfig.sceneView;
          switchButton.value = "2D";
          console.log('setup handler');
          on.once(fl, 'layerview-create', function() {
            console.log('create');
            map.remove(fl);
          });
        }
      }

      // convenience function for creating a 2D or 3D view
      function createView(params, type){
        var view;
        var is2D = type === "2d";
        if(is2D){
          view = new MapView(params);
          return view;
        } else {
          view = new SceneView(params);
        }
        return view;
      }

    });
  </script>

</head>

<body>
  <div id="viewDiv"></div>
  <div id="infoDiv">
    <input class="esri-component esri-widget--button esri-widget esri-interactive"
      type="button" id="switch-btn" value="3D">
  </div>
</body>
</html>
              
            
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JS

              
                
              
            
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