notes.html

   1 <html>
   2     <head>
   3         <meta charset="utf-8">
   4         <style>
   5             div[id^="slide-"] {
   6                 display: none;
   7             }
   8         </style>
   9     </head>
  10     <body>
  11         <div id="notes" >
  12             hello
  13         </div>
  14     </body>
  15     <script>
  16      var bc = new BroadcastChannel('test_channel');
  17      bc.onmessage = function (ev) { changeNotes(ev.data); } /* receive */
  18
  19      function changeNotes(notes) {
  20          window.console.log(notes);
  21          document.getElementById('notes').innerHTML = notes;
  22      }
  23
  24     </script>
  25 </html>