Google HTML/CSS Style Guide(2019年9月時点) より意訳とまとめ。訳が間違っていたらごめんなさい。 プロトコル imageやmedia、scriptなどを指定するときに、可能な限りhttpsを利用する。 <!-- 非推奨:プロトコルの省略 --> <script src="//ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script> <!-- 非推奨:httpの利用 --> <script src="http://ajax.googleapis.com/ajax/libs/jquery/3.4.0/jquery.min.js"></script> <!-- 推奨 --> <script src="https://ajax.googleapis.com/ajax/libs/jquery
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