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Format info window content

Description

This sample shows how to format the content of an info window using formatting functions added at version 2.2 of the ArcGIS API for JavaScript. You can format the info template content using one of the out-of-the box formatters or for more advanced options you can define a custom formatting function.

Code

<!DOCTYPE html>
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8">

    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no">
    <title>Formatter Function</title>

    <link rel="stylesheet" href="https://js.arcgis.com/3.40/dijit/themes/soria/soria.css">
    <link rel="stylesheet" href="https://js.arcgis.com/3.40/dojox/layout/resources/ExpandoPane.css">
    <link rel="stylesheet" href="https://js.arcgis.com/3.40/esri/css/esri.css">
    <style>
      html, body { height: 100%; width: 100%; margin: 0; padding: 0; }
    </style>

    <script src="https://js.arcgis.com/3.40/"></script>
    <script>
      // infotemplate formatting functions need to be in the global scope to work
      var map, compare, compare2;

      require([
        "esri/map",
        "esri/InfoTemplate",
        "esri/layers/FeatureLayer",
        "esri/renderers/SimpleRenderer",
        "esri/symbols/SimpleFillSymbol",
        "esri/symbols/SimpleLineSymbol",
        "dojo/dom",
        "dojo/number",
        "dojo/on",
        "dojo/parser",
        "esri/Color",
        "dijit/layout/BorderContainer",
        "dijit/layout/ContentPane",
        "dojox/layout/ExpandoPane",
        "dojo/domReady!"
      ],
        function (
          Map, InfoTemplate, FeatureLayer, SimpleRenderer, SimpleFillSymbol,
          SimpleLineSymbol, dom, number, on, parser, Color
      ) {

          parser.parse();

          map = new Map("mapDiv", {
            basemap: "streets-vector",
            center: [-86.796, 47.13],
            zoom: 3
          });

          var infoTemplate = new InfoTemplate();
          infoTemplate.setTitle("Population in ${NAME}");
          infoTemplate.setContent("<b>2020:</b> ${Total_Pop_2020:compare}<br/>" +
                                  "<b>2010:</b> ${Total_Pop_2010:NumberFormat}");
          var states = new FeatureLayer("https://services.arcgis.com/P3ePLMYs2RVChkJx/arcgis/rest/services/2020_Census_State_Apportionment/FeatureServer/0", {
            mode: FeatureLayer.MODE_SNAPSHOT,
            infoTemplate: infoTemplate,
            outFields: [
              "NAME", "Total_Pop_2010", "Total_Pop_2020"
            ]
          });

          //apply a renderer
          var symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
            new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
              new Color([255, 255, 255, 0.35]), 1),
            new Color([109, 146, 155, 0.35]));
          states.setRenderer(new SimpleRenderer(symbol));

          map.addLayer(states);

          on(dom.byId("chkT1"), "click", changeInfoTemplate);
          on(dom.byId("chkT2"), "click", changeInfoTemplate);

          dom.byId("chkT1").checked = true;

          compare = function (value, key, data) {
            var result = "", diff, pctChange;

            result = value > data.Total_Pop_2010 ? "images/up.png" : "images/down.png";
            diff = data.Total_Pop_2020 - data.Total_Pop_2010;
            pctChange = (diff * 100) / data.Total_Pop_2010;

            return number.format(value) +
                   "   <img src='" + result + "'/>" +
                   "  <span style='color: " +
                   (pctChange < 0 ? "red" : "green") + ";'>"
                     + number.format(pctChange, { places: 3 }) +
                   "%</span>";
          };

          compare2 = function (value, key, data) {
            var diff = data.Total_Pop_2020 - data.Total_Pop_2010;
            var result = diff > 0 ? "images/up.png" : "images/down.png";
            var pctChange = (diff * 100) / data.Total_Pop_2010;

            return "<img src='" + result + "'/>" +
                   "  <span style='color: " +
                   (pctChange < 0 ? "red" : "green") + ";'>"
                     + number.format(pctChange, { places: 3 }) +
                   "%</span>";
          };

          function changeInfoTemplate () {
            console.log("changed");
            map.infoWindow.hide();

            var t1Checked = dom.byId("chkT1").checked;
            var t2Checked = dom.byId("chkT2").checked;
            var templateContent = "";

            if (t1Checked) {
              templateContent = "<b>2020: </b>${Total_Pop_2020:compare}<br/>" +
                                "<b>2010: </b>${Total_Pop_2010:NumberFormat}";
            }
            else if (t2Checked) {
              templateContent = "<b>2020: </b>${Total_Pop_2020:NumberFormat}<br/>" +
                                "<b>2010: </b>${Total_Pop_2010:NumberFormat}<br/>" +
                                "Population change: ${DIFF:compare2}";
            }
            states.infoTemplate.setContent(templateContent);
          }
        });
    </script>
  </head>
  <body class="soria">
    <div data-dojo-type="dijit/layout/BorderContainer"
         data-dojo-props="design:'headline', gutters:true"
         style="width: 100%; height: 100%; margin: 0;">

      <div data-dojo-type="dojox/layout/ExpandoPane"
           data-dojo-props="duration:300, title:'Details', region:'left', maxWidth:'220px', easeIn:'easing.linear', easeOut:'easing.linear'"
           style="width:220px;">
         <p>
          Click a state to view the population change between 2010 and 2020.<br/> <br/>
          <b>Change the info template:</b> Template 1 displays the percentage growth (or decline) in population. The values are color-coded green for population increase and red for decline in population. Template 2 creates a new calculated field called diff that displays the population difference. <br/>
          <input id="chkT1" name="template" type="radio"/>
          <label for="chkT1">Template 1</label>
          <br />
          <input id="chkT2" name="template" type="radio"/>
          <label for="chkT2">Template 2</label>
        </p>
      </div>
      <div id="mapDiv" data-dojo-type="dijit/layout/ContentPane" data-dojo-props="region:'center'"></div>
    </div>
  </body>

</html>
 
          
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