Query top features from a FeatureLayer

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This sample demonstrates how to use the queryTopFeatures() method on a FeatureLayer to query the most or the least visited national parks in each state for a given year or total of all time. The queryTopFeatures() method will return a FeatureSet containing an array of the most or the least visited parks grouped by states and ordered by the number of visits in descending or ascending order. The attributes of returned parks will be displayed on the right side of the application and the resulting features will be displayed in the map.

How it works

When the application starts, a UI displays options for user input. Here, the user can specify if the results should include the most or the least visited parks, how many parks should be returned from each state, and the time extent to query against. When calling the queryTopFeatures() method, the topFilter property of the TopFeaturesQuery parameter must always be set. In this app, the TopFeaturesQuery parameters are set as shown below.

                                                                                                                                                                                                                                                                                                       
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<html>
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="initial-scale=1,maximum-scale=1,user-scalable=no"
    />
    <title>Query top features from a FeatureLayer | Sample | ArcGIS API for JavaScript 4.21</title>
    <script type="module"  src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.esm.js"></script>
    <script nomodule="" src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.js"></script>
    <link rel="stylesheet" type="text/css" href="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.css" />
    <link rel="stylesheet" href="https://js.arcgis.com/4.21/esri/themes/dark/main.css" />
    <script src="https://js.arcgis.com/4.21/"></script>

    <style>
      html,
      body,
      #viewDiv {
        height: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
      #infoDiv {
        padding: 6px;
        width: 370px;
        height: 97%;
        position: absolute;
        top: 10px;
        right: 10px;
        --calcite-ui-brand: #71C96E;
        --calcite-ui-brand-hover: #67B564;
      #resultsDiv {
        overflow: auto;
        display: none;
    </style>

    <script>
      require([
        "esri/Map",
        "esri/views/MapView",
        "esri/layers/FeatureLayer",
        "esri/symbols/WebStyleSymbol",
        "esri/Basemap",
        "esri/rest/support/TopFeaturesQuery",
        "esri/rest/support/TopFilter"
      ], (Map, MapView, FeatureLayer, WebStyleSymbol, Basemap, TopFeaturesQuery, TopFilter) =>
        (async () => {
        // dark human geography basemap
        const basemap = new Basemap({
          portalItem: {
            id: "4f2e99ba65e34bb8af49733d9778fb8e"
        // national parks layer
        const layer = new FeatureLayer({
          url:
            "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/US_National_Parks_Annual_Visitation/FeatureServer/0",
          outFields: ["*"],
          renderer: await setRenderer(),
          popupTemplate: createPopupTemplate()
        const map = new Map({
          layers: [layer]
        const view = new MapView({
          container: "viewDiv",
          map: map,
          center: [-97.75188, 37.23308],
          zoom: 3,
          padding: {
            right: 380
        const layerView = await view.whenLayerView(layer);
        // get UI components involved in top features query
        const orderDirectionSelection = document.getElementById("orderDirectionSelection");
        const orderByFieldSelection = document.getElementById("orderByFieldSelect");
        const clearQueryButton = document.getElementById("clear-query");
        const queryParksButton = document.getElementById("query-parks");
        // *********************************************************
        // This function runs when user clicks on query parks button
        // *********************************************************
        document.getElementById("query-parks").addEventListener("click", async () => {
          clearQueryButton.appearance = "outline";
          queryParksButton.appearance = "solid";
          // check if the user wants to select the most or least visited parks
          // in each state
          const queryOrder = orderDirectionSelection.selectedItem.value;
          const orderByField = [
            `${orderByFieldSelection.selectedOption.value} ${queryOrder}`
          // TopFeatureQuery parameter for the queryTopFeatures method
          // collect user inputs to query either the most or the least
          // visited national parks in each state
          query = new TopFeaturesQuery({
            topFilter: new TopFilter({
              topCount: parseInt(topCountSelect.selectedOption.value),
              groupByFields: ["State"],
              orderByFields: orderByField
            }),
            orderByFields: orderByField,
            outFields: ["State, TOTAL, F2018, F2019, F2020, Park"],
            returnGeometry: true,
            cacheHint: false
          });
          const results = await layer.queryTopFeatures(query);
          document.getElementById("resultsDiv").style.display = "block";
          document.getElementById("resultsHeading").innerHTML = `Results: ${results.features.length} parks`;
          document.getElementById("results").innerHTML = "";
          graphics.forEach((result, index) => {
            const attributes = result.attributes;
            const item = document.createElement("calcite-pick-list-item");
            item.setAttribute("label", attributes.Park);
            item.setAttribute("value", index);
            const visitorTotal = orderByFieldSelection.selectedOption.value;
            const total = `Total visitors: ${attributes[visitorTotal]}`;
            const state = `State: ${attributes.State}`;
            const description = total + "\n" + state;
            item.setAttribute("description", description);
            item.addEventListener("click", parkResultClickHandler);
            document.getElementById("results").appendChild(item);
          // set query for the queryTopObjectIds.
          query.orderByFields = [""];
          const objectIds = await layer.queryTopObjectIds(query);
        // ***************************************************
        // this function runs when user clicks on the park
        // in the list shown on the right side of the app
        // ***************************************************
        function parkResultClickHandler(event) {
          const target = event.target;
          const resultId = target.getAttribute("value");
          // get the graphic corresponding to the clicked zip code
          const result =
            resultId && graphics && graphics[parseInt(resultId, 10)];
          if (result) {
              features: [result],
              location: result.geometry
        clearQueryButton.addEventListener("click", () => {
          clearQueryButton.appearance = "solid";
          queryParksButton.appearance = "outline";
          layerView.filter = null;
          document.getElementById("resultsHeading").innerHTML = `Results`;
          document.getElementById("results").innerHTML = "";
        async function setRenderer() {
          const symbol = new WebStyleSymbol({
            name: "park",
            styleName: "Esri2DPointSymbolsStyle"
          const cimSymbol = await symbol.fetchCIMSymbol();
          cimSymbol.data.symbol.symbolLayers[0].size = 16;
          cimSymbol.data.symbol.symbolLayers[1] = null;
          return {
            type: "simple",
            symbol: cimSymbol
        function createPopupTemplate(){
          return {
            title: "{Park}",
            content: [{
              type: "fields",
              fieldInfos: [{
                fieldName: "TOTAL",
                label: "Total visits",
                format: {
                  places: 0,
                  digitSeparator: true
               fieldName: "F2018",
               label: "2018",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2019",
               label: "2019",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2020",
               label: "2020",
               format: {
                 places: 0,
                 digitSeparator: true
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
    <calcite-panel id="infoDiv" class="calcite-theme-dark">
      <h3 class="heading" slot="header-content">
        Most or least visited parks by states
      </h3>
      <div id="content" style="padding: 5px">
        <label>
          <calcite-radio-group id="orderDirectionSelection" layout="horizontal" appearance="outline" scale="m" width="auto">
            <calcite-radio-group-item value="DESC" checked="">Most visited</calcite-radio-group-item>
            <calcite-radio-group-item value="ASC">Least visited</calcite-radio-group-item>
          </calcite-radio-group>
        </label><br /><br />
        <label>
          Number of parks to be returned from each state:
          <calcite-select id="topCountSelect" scale="s" width="auto">
            <calcite-option label="1" value="1"></calcite-option>
            <calcite-option label="2" value="2"></calcite-option>
            <calcite-option label="3" value="3"></calcite-option>
          </calcite-select>
        </label><br />
        <label>
          Year:
          <calcite-select id="orderByFieldSelect" scale="s" width="auto">
            <calcite-option
              label="Total of all time"
              value="TOTAL"
            ></calcite-option>
            <calcite-option label="2018" value="F2018"></calcite-option>
            <calcite-option label="2019" value="F2019"></calcite-option>
            <calcite-option label="2020" value="F2020"></calcite-option>
          </calcite-select>
        </label><br />
        <div style="width: 360px; max-width: 100%; display: flex;flex-direction: row;">
          <calcite-button
            id="query-parks" width="half" appearance="solid" alignment="center"scale="s">
            Query parks
          </calcite-button>
          <calcite-button
            id="clear-query" width="half" appearance="outline" alignment="center" scale="s">
            Clear query
          </calcite-button>
        </div>
        <br />
      </div>
      <calcite-panel id="resultsDiv">
        <h3 class="heading" id="resultsHeading" slot="header-content">
          Results
        </h3>
        <div id="results"></div>
      </calcite-panel>
    </calcite-panel>
  </body>
</html>

The results of the queryTopFeatures() method are processed as shown below to display the attributes of the parks in descending or ascending order on the right side of the application. The user then can click on an ordered result to display the corresponding popup on the map.

                                                                                                                                                                                                                                                                                                       
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<html>
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="initial-scale=1,maximum-scale=1,user-scalable=no"
    />
    <title>Query top features from a FeatureLayer | Sample | ArcGIS API for JavaScript 4.21</title>
    <script type="module"  src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.esm.js"></script>
    <script nomodule="" src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.js"></script>
    <link rel="stylesheet" type="text/css" href="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.css" />
    <link rel="stylesheet" href="https://js.arcgis.com/4.21/esri/themes/dark/main.css" />
    <script src="https://js.arcgis.com/4.21/"></script>

    <style>
      html,
      body,
      #viewDiv {
        height: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
      #infoDiv {
        padding: 6px;
        width: 370px;
        height: 97%;
        position: absolute;
        top: 10px;
        right: 10px;
        --calcite-ui-brand: #71C96E;
        --calcite-ui-brand-hover: #67B564;
      #resultsDiv {
        overflow: auto;
        display: none;
    </style>

    <script>
      require([
        "esri/Map",
        "esri/views/MapView",
        "esri/layers/FeatureLayer",
        "esri/symbols/WebStyleSymbol",
        "esri/Basemap",
        "esri/rest/support/TopFeaturesQuery",
        "esri/rest/support/TopFilter"
      ], (Map, MapView, FeatureLayer, WebStyleSymbol, Basemap, TopFeaturesQuery, TopFilter) =>
        (async () => {
        // dark human geography basemap
        const basemap = new Basemap({
          portalItem: {
            id: "4f2e99ba65e34bb8af49733d9778fb8e"
        // national parks layer
        const layer = new FeatureLayer({
          url:
            "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/US_National_Parks_Annual_Visitation/FeatureServer/0",
          outFields: ["*"],
          renderer: await setRenderer(),
          popupTemplate: createPopupTemplate()
        const map = new Map({
          layers: [layer]
        const view = new MapView({
          container: "viewDiv",
          map: map,
          center: [-97.75188, 37.23308],
          zoom: 3,
          padding: {
            right: 380
        const layerView = await view.whenLayerView(layer);
        // get UI components involved in top features query
        const orderDirectionSelection = document.getElementById("orderDirectionSelection");
        const orderByFieldSelection = document.getElementById("orderByFieldSelect");
        const clearQueryButton = document.getElementById("clear-query");
        const queryParksButton = document.getElementById("query-parks");
        // *********************************************************
        // This function runs when user clicks on query parks button
        // *********************************************************
        document.getElementById("query-parks").addEventListener("click", async () => {
          clearQueryButton.appearance = "outline";
          queryParksButton.appearance = "solid";
          // check if the user wants to select the most or least visited parks
          // in each state
          const queryOrder = orderDirectionSelection.selectedItem.value;
          const orderByField = [
            `${orderByFieldSelection.selectedOption.value} ${queryOrder}`
          // TopFeatureQuery parameter for the queryTopFeatures method
          // collect user inputs to query either the most or the least
          // visited national parks in each state
          query = new TopFeaturesQuery({
            topFilter: new TopFilter({
              topCount: parseInt(topCountSelect.selectedOption.value),
              groupByFields: ["State"],
              orderByFields: orderByField
            orderByFields: orderByField,
            outFields: ["State, TOTAL, F2018, F2019, F2020, Park"],
            returnGeometry: true,
            cacheHint: false
          const results = await layer.queryTopFeatures(query);
          document.getElementById("resultsDiv").style.display = "block";
          document.getElementById("resultsHeading").innerHTML = `Results: ${results.features.length} parks`;
          document.getElementById("results").innerHTML = "";
          graphics = results.features;
          graphics.forEach((result, index) => {
            const attributes = result.attributes;
            const item = document.createElement("calcite-pick-list-item");
            item.setAttribute("label", attributes.Park);
            item.setAttribute("value", index);

            const visitorTotal = orderByFieldSelection.selectedOption.value;
            const total = `Total visitors: ${attributes[visitorTotal]}`;
            const state = `State: ${attributes.State}`;
            const description = total + "\n" + state;
            item.setAttribute("description", description);
            item.addEventListener("click", parkResultClickHandler);
            document.getElementById("results").appendChild(item);
          });
          // set query for the queryTopObjectIds.
          query.orderByFields = [""];
          const objectIds = await layer.queryTopObjectIds(query);
        // ***************************************************
        // this function runs when user clicks on the park
        // in the list shown on the right side of the app
        // ***************************************************
        function parkResultClickHandler(event) {
          const target = event.target;
          const resultId = target.getAttribute("value");
          // get the graphic corresponding to the clicked zip code
          const result =
            resultId && graphics && graphics[parseInt(resultId, 10)];
          if (result) {
              features: [result],
              location: result.geometry
        clearQueryButton.addEventListener("click", () => {
          clearQueryButton.appearance = "solid";
          queryParksButton.appearance = "outline";
          layerView.filter = null;
          document.getElementById("resultsHeading").innerHTML = `Results`;
          document.getElementById("results").innerHTML = "";
        async function setRenderer() {
          const symbol = new WebStyleSymbol({
            name: "park",
            styleName: "Esri2DPointSymbolsStyle"
          const cimSymbol = await symbol.fetchCIMSymbol();
          cimSymbol.data.symbol.symbolLayers[0].size = 16;
          cimSymbol.data.symbol.symbolLayers[1] = null;
          return {
            type: "simple",
            symbol: cimSymbol
        function createPopupTemplate(){
          return {
            title: "{Park}",
            content: [{
              type: "fields",
              fieldInfos: [{
                fieldName: "TOTAL",
                label: "Total visits",
                format: {
                  places: 0,
                  digitSeparator: true
               fieldName: "F2018",
               label: "2018",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2019",
               label: "2019",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2020",
               label: "2020",
               format: {
                 places: 0,
                 digitSeparator: true
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
    <calcite-panel id="infoDiv" class="calcite-theme-dark">
      <h3 class="heading" slot="header-content">
        Most or least visited parks by states
      </h3>
      <div id="content" style="padding: 5px">
        <label>
          <calcite-radio-group id="orderDirectionSelection" layout="horizontal" appearance="outline" scale="m" width="auto">
            <calcite-radio-group-item value="DESC" checked="">Most visited</calcite-radio-group-item>
            <calcite-radio-group-item value="ASC">Least visited</calcite-radio-group-item>
          </calcite-radio-group>
        </label><br /><br />
        <label>
          Number of parks to be returned from each state:
          <calcite-select id="topCountSelect" scale="s" width="auto">
            <calcite-option label="1" value="1"></calcite-option>
            <calcite-option label="2" value="2"></calcite-option>
            <calcite-option label="3" value="3"></calcite-option>
          </calcite-select>
        </label><br />
        <label>
          Year:
          <calcite-select id="orderByFieldSelect" scale="s" width="auto">
            <calcite-option
              label="Total of all time"
              value="TOTAL"
            ></calcite-option>
            <calcite-option label="2018" value="F2018"></calcite-option>
            <calcite-option label="2019" value="F2019"></calcite-option>
            <calcite-option label="2020" value="F2020"></calcite-option>
          </calcite-select>
        </label><br />
        <div style="width: 360px; max-width: 100%; display: flex;flex-direction: row;">
          <calcite-button
            id="query-parks" width="half" appearance="solid" alignment="center"scale="s">
            Query parks
          </calcite-button>
          <calcite-button
            id="clear-query" width="half" appearance="outline" alignment="center" scale="s">
            Clear query
          </calcite-button>
        </div>
        <br />
      </div>
      <calcite-panel id="resultsDiv">
        <h3 class="heading" id="resultsHeading" slot="header-content">
          Results
        </h3>
        <div id="results"></div>
      </calcite-panel>
    </calcite-panel>
  </body>
</html>

The parks are also filtered on the map to just display the parks matching the query results. To do this, the queryTopObjectIds() method is called to get the objectIds of the parks returned from queryTopFeatures method. Then the array of objectIds is used to set a filter of the layer view representing the national parks feature layer.

                                                                                                                                                                                                                                                                                                       
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<html>
  <head>
    <meta charset="utf-8" />
    <meta
      name="viewport"
      content="initial-scale=1,maximum-scale=1,user-scalable=no"
    />
    <title>Query top features from a FeatureLayer | Sample | ArcGIS API for JavaScript 4.21</title>
    <script type="module"  src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.esm.js"></script>
    <script nomodule="" src="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.js"></script>
    <link rel="stylesheet" type="text/css" href="https://js.arcgis.com/calcite-components/1.0.0-beta.62/calcite.css" />
    <link rel="stylesheet" href="https://js.arcgis.com/4.21/esri/themes/dark/main.css" />
    <script src="https://js.arcgis.com/4.21/"></script>

    <style>
      html,
      body,
      #viewDiv {
        height: 100%;
        width: 100%;
        margin: 0;
        padding: 0;
      #infoDiv {
        padding: 6px;
        width: 370px;
        height: 97%;
        position: absolute;
        top: 10px;
        right: 10px;
        --calcite-ui-brand: #71C96E;
        --calcite-ui-brand-hover: #67B564;
      #resultsDiv {
        overflow: auto;
        display: none;
    </style>

    <script>
      require([
        "esri/Map",
        "esri/views/MapView",
        "esri/layers/FeatureLayer",
        "esri/symbols/WebStyleSymbol",
        "esri/Basemap",
        "esri/rest/support/TopFeaturesQuery",
        "esri/rest/support/TopFilter"
      ], (Map, MapView, FeatureLayer, WebStyleSymbol, Basemap, TopFeaturesQuery, TopFilter) =>
        (async () => {
        // dark human geography basemap
        const basemap = new Basemap({
          portalItem: {
            id: "4f2e99ba65e34bb8af49733d9778fb8e"
        // national parks layer
        const layer = new FeatureLayer({
          url:
            "https://services.arcgis.com/V6ZHFr6zdgNZuVG0/arcgis/rest/services/US_National_Parks_Annual_Visitation/FeatureServer/0",
          outFields: ["*"],
          renderer: await setRenderer(),
          popupTemplate: createPopupTemplate()
        const map = new Map({
          layers: [layer]
        const view = new MapView({
          container: "viewDiv",
          map: map,
          center: [-97.75188, 37.23308],
          zoom: 3,
          padding: {
            right: 380
        const layerView = await view.whenLayerView(layer);
        // get UI components involved in top features query
        const orderDirectionSelection = document.getElementById("orderDirectionSelection");
        const orderByFieldSelection = document.getElementById("orderByFieldSelect");
        const clearQueryButton = document.getElementById("clear-query");
        const queryParksButton = document.getElementById("query-parks");
        // *********************************************************
        // This function runs when user clicks on query parks button
        // *********************************************************
        document.getElementById("query-parks").addEventListener("click", async () => {
          clearQueryButton.appearance = "outline";
          queryParksButton.appearance = "solid";
          // check if the user wants to select the most or least visited parks
          // in each state
          const queryOrder = orderDirectionSelection.selectedItem.value;
          const orderByField = [
            `${orderByFieldSelection.selectedOption.value} ${queryOrder}`
          // TopFeatureQuery parameter for the queryTopFeatures method
          // collect user inputs to query either the most or the least
          // visited national parks in each state
          query = new TopFeaturesQuery({
            topFilter: new TopFilter({
              topCount: parseInt(topCountSelect.selectedOption.value),
              groupByFields: ["State"],
              orderByFields: orderByField
            orderByFields: orderByField,
            outFields: ["State, TOTAL, F2018, F2019, F2020, Park"],
            returnGeometry: true,
            cacheHint: false
          const results = await layer.queryTopFeatures(query);
          document.getElementById("resultsDiv").style.display = "block";
          document.getElementById("resultsHeading").innerHTML = `Results: ${results.features.length} parks`;
          document.getElementById("results").innerHTML = "";
          graphics.forEach((result, index) => {
            const attributes = result.attributes;
            const item = document.createElement("calcite-pick-list-item");
            item.setAttribute("label", attributes.Park);
            item.setAttribute("value", index);
            const visitorTotal = orderByFieldSelection.selectedOption.value;
            const total = `Total visitors: ${attributes[visitorTotal]}`;
            const state = `State: ${attributes.State}`;
            const description = total + "\n" + state;
            item.setAttribute("description", description);
            item.addEventListener("click", parkResultClickHandler);
            document.getElementById("results").appendChild(item);
          // set query for the queryTopObjectIds.
          query.orderByFields = [""];
          const objectIds = await layer.queryTopObjectIds(query);
          layerView.filter = {
            objectIds
          };
        // ***************************************************
        // this function runs when user clicks on the park
        // in the list shown on the right side of the app
        // ***************************************************
        function parkResultClickHandler(event) {
          const target = event.target;
          const resultId = target.getAttribute("value");
          // get the graphic corresponding to the clicked zip code
          const result =
            resultId && graphics && graphics[parseInt(resultId, 10)];
          if (result) {
              features: [result],
              location: result.geometry
        clearQueryButton.addEventListener("click", () => {
          clearQueryButton.appearance = "solid";
          queryParksButton.appearance = "outline";
          layerView.filter = null;
          document.getElementById("resultsHeading").innerHTML = `Results`;
          document.getElementById("results").innerHTML = "";
        async function setRenderer() {
          const symbol = new WebStyleSymbol({
            name: "park",
            styleName: "Esri2DPointSymbolsStyle"
          const cimSymbol = await symbol.fetchCIMSymbol();
          cimSymbol.data.symbol.symbolLayers[0].size = 16;
          cimSymbol.data.symbol.symbolLayers[1] = null;
          return {
            type: "simple",
            symbol: cimSymbol
        function createPopupTemplate(){
          return {
            title: "{Park}",
            content: [{
              type: "fields",
              fieldInfos: [{
                fieldName: "TOTAL",
                label: "Total visits",
                format: {
                  places: 0,
                  digitSeparator: true
               fieldName: "F2018",
               label: "2018",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2019",
               label: "2019",
               format: {
                 places: 0,
                 digitSeparator: true
               fieldName: "F2020",
               label: "2020",
               format: {
                 places: 0,
                 digitSeparator: true
    </script>
  </head>

  <body>
    <div id="viewDiv"></div>
    <calcite-panel id="infoDiv" class="calcite-theme-dark">
      <h3 class="heading" slot="header-content">
        Most or least visited parks by states
      </h3>
      <div id="content" style="padding: 5px">
        <label>
          <calcite-radio-group id="orderDirectionSelection" layout="horizontal" appearance="outline" scale="m" width="auto">
            <calcite-radio-group-item value="DESC" checked="">Most visited</calcite-radio-group-item>
            <calcite-radio-group-item value="ASC">Least visited</calcite-radio-group-item>
          </calcite-radio-group>
        </label><br /><br />
        <label>
          Number of parks to be returned from each state:
          <calcite-select id="topCountSelect" scale="s" width="auto">
            <calcite-option label="1" value="1"></calcite-option>
            <calcite-option label="2" value="2"></calcite-option>
            <calcite-option label="3" value="3"></calcite-option>
          </calcite-select>
        </label><br />
        <label>
          Year:
          <calcite-select id="orderByFieldSelect" scale="s" width="auto">
            <calcite-option
              label="Total of all time"
              value="TOTAL"
            ></calcite-option>
            <calcite-option label="2018" value="F2018"></calcite-option>
            <calcite-option label="2019" value="F2019"></calcite-option>
            <calcite-option label="2020" value="F2020"></calcite-option>
          </calcite-select>
        </label><br />
        <div style="width: 360px; max-width: 100%; display: flex;flex-direction: row;">
          <calcite-button
            id="query-parks" width="half" appearance="solid" alignment="center"scale="s">
            Query parks
          </calcite-button>
          <calcite-button
            id="clear-query" width="half" appearance="outline" alignment="center" scale="s">
            Clear query
          </calcite-button>
        </div>
        <br />
      </div>
      <calcite-panel id="resultsDiv">
        <h3 class="heading" id="resultsHeading" slot="header-content">
          Results
        </h3>
        <div id="results"></div>
      </calcite-panel>
    </calcite-panel>
  </body>
</html>

To create the list of the most or least visited parks, we use calcite components, a set of responsive, reusable web components from Esri's new design system. We also style the calcite components to match the colors of park symbols as shown below:

          
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#infoDiv {
  padding: 6px;
  width: 370px;
  height: 97%;
  position: absolute;
  top: 10px;
  right: 10px;
  --calcite-ui-brand: #71C96E;
  --calcite-ui-brand-hover: #67B564;
}

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