dom/midi/tests/file_midi_permission_gated.html

   1 <!DOCTYPE html>
   2 <html>
   3 <head>
   4 <script>
   5   window.addEventListener("message", async (evt) => {
   6     try {
   7       await navigator.requestMIDIAccess({sysex: evt.data});
   8       parent.postMessage("succeeded", "*");
   9     } catch (ex) {
  10       parent.postMessage("failed", "*");
  11     }
  12   });
  13 </script>
  14 <body></body>
  15 </html>