JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html>
  <head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8"/>
    <meta http-equiv="X-UA-Compatible" content="IE=7,IE=9" />
    <!--The viewport meta tag is used to improve the presentation and behavior of the samples 
      on iOS devices-->
    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
    <title></title>
    <link rel="stylesheet" type="text/css" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.7/js/dojo/dijit/themes/claro/claro.css">  
    <script type="text/javascript">var djConfig = { parseOnLoad: true }; </script>
    <script type="text/javascript" src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.7"></script>
    <script type="text/javascript" language="Javascript">
      dojo.require("dojo.date.locale");
      dojo.require("esri.map");
      dojo.require("esri.layers.FeatureLayer");

      var map;
      function init() {
        var startExtent = new esri.geometry.Extent({"xmin":-11331128,"ymin":4537725,"xmax":-11312019,"ymax":4549191,"spatialReference":{"wkid":102100}});
        map = new esri.Map("map", { 
          "extent": startExtent
        });

        var basemap = new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Street_Map/MapServer");
        map.addLayer(basemap);

        var iTemplate = new esri.InfoTemplate(
          "Wells",
          // "Updated: ${UPDATE_DAT:DateString(local: true, hideTime: true)}<br />${OBJECTID}" 
          // "Updated: ${UPDATE_DAT:DateFormat(selector: 'date', datePattern: 'M/d/y'}<br />${OBJECTID}" 
          "Updated: ${UPDATE_DAT:CustomDate()}<br />${OBJECTID}" 
        );
        var opLayer = new esri.layers.FeatureLayer("http://sampleserver3.arcgisonline.com/ArcGIS/rest/services/Petroleum/KSWells/MapServer/0", {
          "id": "wells",
          "infoTemplate": iTemplate,
         ...