JSFiddle - React, Tailwind, and code Playground

HTML

<script type="text/javascript" src="http://maps.googleapis.com/maps/api/js?sensor=false"></script>

  <div id="map_canvas" style="height:300px;"></div>
  <div id="toggleTiles"></div>

JavaScript

var overlays=[
  { 
    img:'http://www.gravatar.com/avatar/3c9ccfaa084eb12cc0b72e13962003e7?s=256&d=identicon&r=PG',
    bounds:new google.maps.LatLngBounds(new google.maps.LatLng(62.281819, -150.287132), 
                                        new google.maps.LatLng(62.400471, -150.005608))
  },
  {
    img:'http://www.gravatar.com/avatar/a14f2a08ae523d5a674b719eae03c428?s=256&d=identicon&r=PG',
    bounds:new google.maps.LatLngBounds(new google.maps.LatLng(62.281819, -150.787132), 
                                        new google.maps.LatLng(62.400471, -150.505608))
  },
  {
    img:'https://developer.mozilla.org/skins/mdn/Transitional/img/mdn-logo.png',
    bounds:new google.maps.LatLngBounds(new google.maps.LatLng(62.281819, -149.787132), 
                                        new google.maps.LatLng(62.400471, -149.505608))
  }
  
  ];

  Tiles.prototype = new google.maps.OverlayView();

  function ginit() {
    var myLatLng = new google.maps.LatLng(62.323907, -150.109291);
    var myOptions = {
      zoom: 10,
      center: myLatLng,
      mapTypeId: google.maps.MapTypeId.SATELLITE
    };
    var bounds=new google.maps.LatLngBounds();
    var map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
    for(var i=0;i<overlays.length;++i)
    {
      overlays[i].overlay=new Tiles(overlays[i].bounds,overlays[i].img,map)
      bounds.union(overlays[i].bounds);
      $('<div>').append(
      $('<input checked="checked" type="checkbox" value="'+i+'"/>')
       .click(function(){
                          //alert(map)
                          overlays[this.value].overlay.setMap((this.checked)?map:null)
                        }))
        .append('<strong>Tile#'+(i+1)+'</strong>')
        .appendTo('#toggleTiles');
      
      
    }
    map.fitBounds(bounds)
    
   }

  function Tiles(bounds, image, map) 
  {
    this.bounds_ = bounds;
    this.image_ = image;
    this.map_ = map;
    this.div_ = null;
    this.setMap(map);
  }

 ...