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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 visualization-classbreaks sample,
     read the original sample description at developers.arcgis.com.
     https://developers.arcgis.com/javascript/latest/sample-code/visualization-classbreaks/
     -->
    <title>
      Visualize data with class breaks | Sample | ArcGIS API for JavaScript 4.24
    </title>

    <link
      rel="stylesheet"
      href="https://js.arcgis.com/4.24/esri/themes/light/main.css"
    />
    <script src="https://js.arcgis.com/4.24/"></script>

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

    <script>
      require([
        "esri/Map",
        "esri/views/MapView",
        "esri/layers/FeatureLayer",
        "esri/widgets/Legend"
      ], (Map, MapView, FeatureLayer, Legend) => {
        /*****************************************************************
         * Define symbols for each class break.
         *****************************************************************/

        const less35 = {
          type: "simple-fill", // autocasts as new SimpleFillSymbol()
          color: "#fffcd4",
          style: "solid",
          outline: {
            width: 0.2,
            color: [255, 255, 255, 0.5]
          }
        };

        const less50 = {
          type: "simple-fill", // autocasts as new SimpleFillSymbol()
          color: "#b1cdc2",
          style: "solid",
          outline: {
            width: 0.2,
            color: [255, 255, 255, 0.5]
          }
        };

        const more50 = {
          type: "simple-fill", // autocasts as new SimpleFillSymbol()
          color: "#38627a",
          style: "solid",
          outline: {
            width: 0.2,
            color: [255, 255, 255, 0.5]
          }
        };

        const more75 = {
          type: "simple-fill", // autocasts as new SimpleFillSymbol()
          color: "#0d2644",
          style: "solid",
          outline: {
            width: 0.2,
            color: [255, 255, 255, 0.5]
          }
        };

        /*****************************************************************
         * Set each unique value directly in the renderer's constructor.
         * At least one field must be used (in this case the "COL_DEG" field).
         * The label property of each unique value will be used to indicate
         * the field value and symbol in the legend.
         *****************************************************************/

        const renderer = {
          type: "class-breaks", // autocasts as new ClassBreaksRenderer()
          field: "COL_DEG",
          normalizationField: "EDUCBASECY",
          legendOptions: {
            title: "% of adults (25+) with a college degree"
          },
          defaultSymbol: {
            type: "simple-fill", // autocasts as new SimpleFillSymbol()
            color: "black",
            style: "backward-diagonal",
            outline: {
              width: 0.5,
              color: [50, 50, 50, 0.6]
            }
          },
          defaultLabel: "no data",
          classBreakInfos: [
            {
              minValue: 0,
              maxValue: 0.3499,
              symbol: less35,
              label: "< 35%"
            },
            {
              minValue: 0.35,
              maxValue: 0.4999,
              symbol: less50,
              label: "35 - 50%"
            },
            {
              minValue: 0.5,
              maxValue: 0.7499,
              symbol: more50,
              label: "50 - 75%"
            },
            {
              minValue: 0.75,
              maxValue: 1.0,
              symbol: more75,
              label: "> 75%"
            }
          ]
        };

        const seattleLayer = new FeatureLayer({
          url: "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/Puget_Sound_BG_demographics/FeatureServer/0",
          title: "Seattle block groups",
          renderer: renderer,
          popupTemplate: {
            // autocast as esri/PopupTemplate
            title: "Block Group {FID_Block_Group}",
            content:
              "{COL_DEG} adults 25 years old and older in this block group have a college degree. " +
              "{NO_COL_DEG} adults do not have a college degree."
          },
          // show only block groups in Seattle
          definitionExpression: "City = 'Seattle' AND EDUCBASECY > 0",
          opacity: 0.9
        });

        const map = new Map({
          basemap: "gray-vector",
          layers: [seattleLayer]
        });

        const view = new MapView({
          container: "viewDiv",
          map: map,
          center: [-122.3487846, 47.58907],
          zoom: 11
        });

        /******************************************************************
         *
         * Add layers to layerInfos on the legend
         *
         ******************************************************************/

        const legend = new Legend({
          view: view
        });

        view.ui.add(legend, "bottom-left");

        view.when().then(async () => {
          const labels = view.map.basemap.referenceLayers.removeAt(0);
          view.map.layers.splice(0, 0, labels);
        });
      });
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
  </body>
</html>
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