nokturnalmortum https://blog.hatena.ne.jp/nokturnalmortum/ 地獄のネコブログ https://anekos.hatenablog.com/ Firefox Vimperator JavaScript 下の例だと、指定した要素が一瞬青くなります。 function flashElement (elem) { let indicator = elem.ownerDocument.createElement("div"); let rect = elem.getBoundingClientRect(); indicator.id = "nyantoro-element-indicator"; let style = "background-color: blue; opacity: 0.5; z-index: 999;" + "position: fixed; " + "top: " + rec… 190 <iframe src="https://hatenablog-parts.com/embed?url=https%3A%2F%2Fanekos.hatenablog.com%2Fentry%2F20080820%2F1219219980" title="特定の要素ピカーンと光らせるような感じのもの - 地獄のネコブログ" class="embed-card embed-blogcard" scrolling="no" frameborder="0" style="display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;"></iframe> Hatena Blog https://hatena.blog 2008-08-20 17:13:00 rich https://anekos.hatenablog.com/entry/20080820/1219219980 1.0 100%