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HTML 

              
                <!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="initial-scale=1,maximum-scale=1,user-scalable=no"
    />
    <title>
      Size visual variable themes | Sample | ArcGIS API for JavaScript 4.18
    </title>

    <link
      rel="stylesheet"
      href="https://jsdev.arcgis.com/next/esri/themes/light/main.css"
    />
    <script src="https://jsdev.arcgis.com/next/"></script>

    <style>
      html,
      body,
      #viewDiv {
        padding: 0;
        margin: 0;
        height: 100%;
        width: 100%;
      }
      #size-theme-container {
        padding: 10px 10px 5px 10px;
      }
      #symbol-style-container {
        padding: 5px 10px 5px 10px;
      }
    </style>

    <script>
      require([
        "esri/WebScene",
        "esri/views/SceneView",
        "esri/layers/FeatureLayer",
        "esri/smartMapping/renderers/size",
        "esri/smartMapping/renderers/univariateColorSize",
        "esri/widgets/Legend",
        "esri/core/watchUtils"
      ], function (
        WebScene,
        SceneView,
        FeatureLayer,
        sizeRendererCreator,
        univariateRendererCreator,
        Legend,
        watchUtils
      ) {

        const clippingArea = {
          "spatialReference": {
            "latestWkid": 3857,
            "wkid": 102100
          },
          "xmin": -9400479.373579163,
          "ymin": 5150542.1260154415,
          "xmax": -9155706.748909581,
          "ymax": 5297332.579794139
        };

        const layer = new FeatureLayer({
          title: "Census tracts",
          portalItem: {
            id: "1566547c530643bb86fc8cbcb3c07875"
          },
          minScale: 0,
          maxScale: 0,
          opacity: 0.01
        });

        const map = new WebScene({
          basemap: {
            portalItem: {
              id: "ba223f982a3c4a0ea8c9953346e2a201"
            }
          },
          layers: [layer]
        });

        view = new SceneView({
          container: "viewDiv",
          map,
          environment: {
            background: {
              type: "color",
              color: "rgba(223, 236, 240,1)"
            },
            atmosphereEnabled: false,
            starsEnabled: false
          },
          camera: {
            "position": {
              "spatialReference": {
                "latestWkid": 3857,
                "wkid": 102100
              },
              "x": -9188084.45719222,
              "y": 4996797.687246369,
              "z": 66472.89310743527
            },
            "heading": 341.89081361907427,
            "tilt": 72.81094838143106
          },
          viewingMode: "local",
          clippingArea,
          constraints: {
            snapToZoom: false
          }
        });

        view.when(async () => {
          const layerView = await view.whenLayerView(layer);
          watchUtils.whenFalseOnce(layerView, "updating", updateLayer);
        });

        const legend = new Legend({
          view,
          container: document.getElementById("legend-container")
        });
        view.ui.add("container-div", "bottom-right");

        const themeSelect = document.getElementById("size-theme-select");
        themeSelect.addEventListener("change", updateLayer);

        // update the layer's renderer each time the user changes a parameter
        async function updateLayer() {
          const theme = themeSelect.value;

          const renderer = await createRenderer({ theme });
          layer.renderer = renderer;
          layer.opacity = 1;
        }

        async function createRenderer({ theme }) {
          // Update the legend title based on the selected theme
          const legendTitles = {
            above: `Increase in number of households 2000-2010`,
            below: `Decline in number of households 2000-2010`,
            "above-and-below": `Change in number of households 2000-2010`
          };

          let params = {
            layer,
            view,
            theme,
            valueExpression: `$feature.TOTHU10 - $feature.TOTHU00`,
            valueExpressionTitle: legendTitles[theme],
            defaultSymbolEnabled: false,
            symbolType: "3d-volumetric-uniform"
          };
          const { renderer } = await univariateRendererCreator.createContinuousRenderer(params);
          return renderer;
        }
      });
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
    <div id="container-div" class="esri-widget">
      <div id="theme-container" class="esri-widget">
        <div id="size-theme-container">
          Select size theme:
          <select id="size-theme-select">
            <option value="above">above</option>
            <option value="below">below</option>
            <option value="above-and-below" selected>above-and-below</option>
          </select>
        </div>
      </div>
      <div id="legend-container"></div>
    </div>
  </body>
</html>
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