JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html>
<html lang="en">
  <head>
    <meta charset="utf-8">
    <meta http-equiv="X-UA-Compatible" content="IE=7,IE=9" />
    <meta name="viewport" content="initial-scale=1, maximum-scale=1,user-scalable=no"/>
    <title></title>
    <link rel="stylesheet" href="http://serverapi.arcgisonline.com/jsapi/arcgis/2.4/js/dojo/dijit/themes/tundra/tundra.css">
    <style>
      html, body { height: 100%; width: 100%; margin: 0; padding: 0; }
      #map{ margin: 0; padding: 0; }
      #pointButton { position: absolute; top: 10px; right: 10px; z-index: 40; }
    </style>
    <script>var dojoConfig = { parseOnLoad: true };</script>
    <script src="http://serverapi.arcgisonline.com/jsapi/arcgis/?v=2.4"></script>
    <script>
      dojo.require("dijit.layout.BorderContainer");
      dojo.require("dijit.layout.ContentPane");
      dojo.require("esri.map");
      
      var map, resizeTimer;
      function init() {
        var initExtent = new esri.geometry.Extent({"xmin":-17878954,"ymin":-2368856,"xmax":11003235,"ymax":12170078,"spatialReference":{"wkid":102100}});
        map = new esri.Map("map",{extent:initExtent});
        var basemap = new esri.layers.ArcGISTiledMapServiceLayer("http://server.arcgisonline.com/ArcGIS/rest/services/World_Topo_Map/MapServer");
        map.addLayer(basemap);
        
        dojo.connect(map, 'onLoad', function() { 
          dojo.connect(dijit.byId('map'), 'resize', function() {  
            clearTimeout(resizeTimer);
            resizeTimer = setTimeout( function() {
              map.resize();
              map.reposition();
            }, 500);
          });

          // Add a point when the map is clicked
dojo.connect(map, 'onClick', function(evt) {
  map.graphics.add(new esri.Graphic(
    evt.mapPoint,
    new esri.symbol.SimpleMarkerSymbol()
  ));
});

          // Add a hard coded point when a button is clicked
dojo.connect(map,onLoad, function() {
  map.graphics.add(new esri.Graphic(
    // Point coordinates are 0, 0
   ...