HTMLの特定のクラスを変えたい <span class="xxx-class">ringo</span> これをこうしたい <button type="button" class="xxx-class">ringo</span> spanをbuttonタグに type="button"を追加 結論 正規表現で置換 (<span)(.*)(xxx-class)(.*)(</span>) <button type="button"$2$3$4</button> 正規表現で置換 まず、最初に該当するものを探す正規表現を書く (<span)(.*)(xxx-class)(.*)(</span>) そ…</span)(.*)(xxx-class)(.*)(</span></button></span)(.*)(xxx-class)(.*)(</span>
