JSFiddle - React, Tailwind, and code Playground

HTML

<!DOCTYPE html>
                    <html>
                    <head>
                    <meta charset="utf-8"/>
                    <title></title>
                    <script type="text/javascript"  src="http://maps.google.com/maps/api/js?sensor=false"></script>
                    <script type="text/javascript" src="http://google-maps-utility-library-v3.googlecode.com/svn/trunk/markerclustererplus/src/markerclusterer.js"></script>


                    <script type="text/javascript"> 

                    var image = new google.maps.MarkerImage("marker-images/image.png",new google.maps.Size(40,35),new google.maps.Point(0,0),new google.maps.Point(20,35));

                      var shadow = new google.maps.MarkerImage(
                        'marker-images/shadow.png',
                        new google.maps.Size(40,35),
                        new google.maps.Point(0,0),
                        new google.maps.Point(20,35)
                      );

                      var shape = {
                        coord: [27,0,30,1,32,2,34,3,35,4,36,5,38,6,39,7,39,8,39,9,39,10,38,11,37,12,33,13,34,14,34,15,33,16,32,17,31,18,27,19,28,20,28,21,27,22,26,23,22,25,23,26,24,27,24,28,24,29,24,30,24,31,24,32,23,33,22,34,17,34,16,33,15,32,15,31,14,30,14,29,15,28,15,27,16,26,17,25,13,23,12,22,11,21,11,20,12,19,8,18,7,17,6,16,5,15,5,14,6,13,2,12,1,11,0,10,0,9,0,8,0,7,1,6,3,5,4,4,5,3,7,2,9,1,12,0,27,0],
        type: 'poly'
      };



          // this variable will collect the html which will eventually be placed in the side_bar 
          var side_bar_html = ""; 

          // arrays to hold copies of the markers and html used by the side_bar 
          // because the function closure trick doesnt work there 
          var gmarkers = []; 

         // global "map" variable
          var map = null;
          var circle = null;

            //marker clusterer
            var mc;

                            var mcOptions = {gridSize: 20, maxZoom: 28};

                      ...