TinyMCE — Form Sync

Keep the underlying textarea updated so a native form still carries the value.

FormData from the real controls 
(submit to inspect)

Important JavaScript

tinymce.init({
  selector: "#body",
  setup: function (editor) {
    editor.on("change keyup", function () {
      editor.save(); // writes HTML back into the textarea
    });
  },
});
// On submit, also call tinymce.triggerSave();