youtubeのタグ貼り付けのカスタムJSでエラーが出たので、対応策メモ。 Failed to execute 'postMessage' on 'DOMWindow': The target origin provided ('https://www.youtube.com') does not match the recipient window's origin ('http://localhost'). 参考はこちら https://so-zou.jp/web-app/tech/web-api/google/yout…
