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HTML のメタデータ</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/HTML_text_fundamentals">HTML テキストの基礎</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Creating_hyperlinks">ハイパーリンクの作成</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Advanced_text_formatting">高度なテキスト整形</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Document_and_website_structure">文書とウェブサイトの構造</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Debugging_HTML">HTML のデバッグ</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Marking_up_a_letter">評価課題: 手紙のマークアップ</a></li> <li><a href="/ja/docs/Learn/HTML/Introduction_to_HTML/Structuring_a_page_of_content">評価課題: コンテンツのページの構造化</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary>マルチメディアとその埋め込み</summary> <ol> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding">マルチメディアとその埋め込みの概要</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Images_in_HTML">HTML の画像</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content">動画と音声のコンテンツ</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies">object から iframe まで — その他の埋め込み技術</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Adding_vector_graphics_to_the_Web">ウェブへのベクターグラフィックの追加</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images">レスポンシブ画像</a></li> <li><a href="/ja/docs/Learn/HTML/Multimedia_and_embedding/Mozilla_splash_page">評価課題: Mozilla のスプラッシュページ</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary>HTML の表</summary> <ol> <li><a href="/ja/docs/Learn/HTML/Tables">HTML の表の概要</a></li> <li><a href="/ja/docs/Learn/HTML/Tables/Basics">HTML の表の基本</a></li> <li><a href="/ja/docs/Learn/HTML/Tables/Advanced">HTML 表の高度な機能とアクセシビリティ</a></li> <li><a href="/ja/docs/Learn/HTML/Tables/Structuring_planet_data">評価課題: 太陽系の惑星データの構造化</a></li> </ol> </details> </li> <li class="section"><a href="/ja/docs/Web/HTML/Reference">リファレンス</a></li> <li class="toggle"> <details open=""> <summary>HTML 要素</summary> <ol><li><a href="/ja/docs/Web/HTML/Element/a"><code><a></code></a></li><li><a href="/ja/docs/Web/HTML/Element/abbr"><code><abbr></code></a></li><li><a href="/ja/docs/Web/HTML/Element/acronym"><code><acronym></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/address"><code><address></code></a></li><li><a href="/ja/docs/Web/HTML/Element/area"><code><area></code></a></li><li><a href="/ja/docs/Web/HTML/Element/article"><code><article></code></a></li><li><a href="/ja/docs/Web/HTML/Element/aside"><code><aside></code></a></li><li><a href="/ja/docs/Web/HTML/Element/audio"><code><audio></code></a></li><li><a href="/ja/docs/Web/HTML/Element/b"><code><b></code></a></li><li><a href="/ja/docs/Web/HTML/Element/base"><code><base></code></a></li><li><a href="/ja/docs/Web/HTML/Element/bdi"><code><bdi></code></a></li><li><a href="/ja/docs/Web/HTML/Element/bdo"><code><bdo></code></a></li><li><a href="/ja/docs/Web/HTML/Element/big"><code><big></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/blockquote"><code><blockquote></code></a></li><li><a href="/ja/docs/Web/HTML/Element/body"><code><body></code></a></li><li><a href="/ja/docs/Web/HTML/Element/br"><code><br></code></a></li><li><a href="/ja/docs/Web/HTML/Element/button"><code><button></code></a></li><li><a href="/ja/docs/Web/HTML/Element/canvas"><code><canvas></code></a></li><li><a href="/ja/docs/Web/HTML/Element/caption"><code><caption></code></a></li><li><a href="/ja/docs/Web/HTML/Element/center"><code><center></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/cite"><code><cite></code></a></li><li><a href="/ja/docs/Web/HTML/Element/code"><code><code></code></a></li><li><a href="/ja/docs/Web/HTML/Element/col"><code><col></code></a></li><li><a href="/ja/docs/Web/HTML/Element/colgroup"><code><colgroup></code></a></li><li><a href="/ja/docs/Web/HTML/Element/data"><code><data></code></a></li><li><a href="/ja/docs/Web/HTML/Element/datalist"><code><datalist></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dd"><code><dd></code></a></li><li><a href="/ja/docs/Web/HTML/Element/del"><code><del></code></a></li><li><a href="/ja/docs/Web/HTML/Element/details"><code><details></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dfn"><code><dfn></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dialog"><code><dialog></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dir"><code><dir></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/div"><code><div></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dl"><code><dl></code></a></li><li><a href="/ja/docs/Web/HTML/Element/dt"><code><dt></code></a></li><li><a href="/ja/docs/Web/HTML/Element/em"><code><em></code></a></li><li><a href="/ja/docs/Web/HTML/Element/embed"><code><embed></code></a></li><li><a href="/ja/docs/Web/HTML/Element/fencedframe"><code><fencedframe></code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/fieldset"><code><fieldset></code></a></li><li><a href="/ja/docs/Web/HTML/Element/figcaption"><code><figcaption></code></a></li><li><a href="/ja/docs/Web/HTML/Element/figure"><code><figure></code></a></li><li><a href="/ja/docs/Web/HTML/Element/font"><code><font></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/footer"><code><footer></code></a></li><li><a href="/ja/docs/Web/HTML/Element/form"><code><form></code></a></li><li><a href="/ja/docs/Web/HTML/Element/frame"><code><frame></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/frameset"><code><frameset></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/Heading_Elements"><code><h1></code></a></li><li><a href="/ja/docs/Web/HTML/Element/head"><code><head></code></a></li><li><a href="/ja/docs/Web/HTML/Element/header"><code><header></code></a></li><li><a href="/ja/docs/Web/HTML/Element/hgroup"><code><hgroup></code></a></li><li><a href="/ja/docs/Web/HTML/Element/hr"><code><hr></code></a></li><li><a href="/ja/docs/Web/HTML/Element/html"><code><html></code></a></li><li><a href="/ja/docs/Web/HTML/Element/i"><code><i></code></a></li><li><a href="/ja/docs/Web/HTML/Element/iframe"><code><iframe></code></a></li><li><a href="/ja/docs/Web/HTML/Element/img"><code><img></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input"><code><input></code></a></li><li><a href="/ja/docs/Web/HTML/Element/ins"><code><ins></code></a></li><li><a href="/ja/docs/Web/HTML/Element/kbd"><code><kbd></code></a></li><li><a href="/ja/docs/Web/HTML/Element/label"><code><label></code></a></li><li><a href="/ja/docs/Web/HTML/Element/legend"><code><legend></code></a></li><li><a href="/ja/docs/Web/HTML/Element/li"><code><li></code></a></li><li><a href="/ja/docs/Web/HTML/Element/link"><code><link></code></a></li><li><a href="/ja/docs/Web/HTML/Element/main"><code><main></code></a></li><li><a href="/ja/docs/Web/HTML/Element/map"><code><map></code></a></li><li><a href="/ja/docs/Web/HTML/Element/mark"><code><mark></code></a></li><li><a href="/ja/docs/Web/HTML/Element/marquee"><code><marquee></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/menu"><code><menu></code></a></li><li><a href="/ja/docs/Web/HTML/Element/meta"><code><meta></code></a></li><li><a href="/ja/docs/Web/HTML/Element/meter"><code><meter></code></a></li><li><a href="/ja/docs/Web/HTML/Element/nav"><code><nav></code></a></li><li><a href="/ja/docs/Web/HTML/Element/nobr"><code><nobr></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/noembed"><code><noembed></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/noframes"><code><noframes></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/noscript"><code><noscript></code></a></li><li><a href="/ja/docs/Web/HTML/Element/object"><code><object></code></a></li><li><a href="/ja/docs/Web/HTML/Element/ol"><code><ol></code></a></li><li><a href="/ja/docs/Web/HTML/Element/optgroup"><code><optgroup></code></a></li><li><a href="/ja/docs/Web/HTML/Element/option"><code><option></code></a></li><li><a href="/ja/docs/Web/HTML/Element/output"><code><output></code></a></li><li><a href="/ja/docs/Web/HTML/Element/p"><code><p></code></a></li><li><a href="/ja/docs/Web/HTML/Element/param"><code><param></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/picture"><code><picture></code></a></li><li><a href="/ja/docs/Web/HTML/Element/plaintext"><code><plaintext></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/portal"><code><portal></code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/pre"><code><pre></code></a></li><li><a href="/ja/docs/Web/HTML/Element/progress"><code><progress></code></a></li><li><a href="/ja/docs/Web/HTML/Element/q"><code><q></code></a></li><li><a href="/ja/docs/Web/HTML/Element/rb"><code><rb></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/rp"><code><rp></code></a></li><li><a href="/ja/docs/Web/HTML/Element/rt"><code><rt></code></a></li><li><a href="/ja/docs/Web/HTML/Element/rtc"><code><rtc></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/ruby"><code><ruby></code></a></li><li><a href="/ja/docs/Web/HTML/Element/s"><code><s></code></a></li><li><a href="/ja/docs/Web/HTML/Element/samp"><code><samp></code></a></li><li><a href="/ja/docs/Web/HTML/Element/script"><code><script></code></a></li><li><a href="/ja/docs/Web/HTML/Element/search"><code><search></code></a></li><li><a href="/ja/docs/Web/HTML/Element/section"><code><section></code></a></li><li><a href="/ja/docs/Web/HTML/Element/select"><code><select></code></a></li><li><a href="/ja/docs/Web/HTML/Element/slot"><code><slot></code></a></li><li><a href="/ja/docs/Web/HTML/Element/small"><code><small></code></a></li><li><a href="/ja/docs/Web/HTML/Element/source"><code><source></code></a></li><li><a href="/ja/docs/Web/HTML/Element/span"><code><span></code></a></li><li><a href="/ja/docs/Web/HTML/Element/strike"><code><strike></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/strong"><code><strong></code></a></li><li><a href="/ja/docs/Web/HTML/Element/style"><code><style></code></a></li><li><a href="/ja/docs/Web/HTML/Element/sub"><code><sub></code></a></li><li><em><a href="/ja/docs/Web/HTML/Element/summary" aria-current="page"><code><summary></code></a></em></li><li><a href="/ja/docs/Web/HTML/Element/sup"><code><sup></code></a></li><li><a href="/ja/docs/Web/HTML/Element/table"><code><table></code></a></li><li><a href="/ja/docs/Web/HTML/Element/tbody"><code><tbody></code></a></li><li><a href="/ja/docs/Web/HTML/Element/td"><code><td></code></a></li><li><a href="/ja/docs/Web/HTML/Element/template"><code><template></code></a></li><li><a href="/ja/docs/Web/HTML/Element/textarea"><code><textarea></code></a></li><li><a href="/ja/docs/Web/HTML/Element/tfoot"><code><tfoot></code></a></li><li><a href="/ja/docs/Web/HTML/Element/th"><code><th></code></a></li><li><a href="/ja/docs/Web/HTML/Element/thead"><code><thead></code></a></li><li><a href="/ja/docs/Web/HTML/Element/time"><code><time></code></a></li><li><a href="/ja/docs/Web/HTML/Element/title"><code><title></code></a></li><li><a href="/ja/docs/Web/HTML/Element/tr"><code><tr></code></a></li><li><a href="/ja/docs/Web/HTML/Element/track"><code><track></code></a></li><li><a href="/ja/docs/Web/HTML/Element/tt"><code><tt></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Element/u"><code><u></code></a></li><li><a href="/ja/docs/Web/HTML/Element/ul"><code><ul></code></a></li><li><a href="/ja/docs/Web/HTML/Element/var"><code><var></code></a></li><li><a href="/ja/docs/Web/HTML/Element/video"><code><video></code></a></li><li><a href="/ja/docs/Web/HTML/Element/wbr"><code><wbr></code></a></li><li><a href="/ja/docs/Web/HTML/Element/xmp"><code><xmp></code></a><abbr class="icon icon-deprecated" title="Deprecated. Not for use in new websites."> <span class="visually-hidden">非推奨</span> </abbr></li></ol> </details> </li> <li class="toggle"> <details> <summary>グローバル属性</summary> <ol><li><a href="/ja/docs/Web/HTML/Global_attributes/accesskey"><code>accesskey</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/anchor"><code>anchor</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr><abbr class="icon icon-nonstandard" title="Non-standard. Check cross-browser support before using."> <span class="visually-hidden">Non-standard</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Global_attributes/autocapitalize"><code>autocapitalize</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/autocorrect"><code>autocorrect</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Global_attributes/autofocus"><code>autofocus</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/class"><code>class</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/contenteditable"><code>contenteditable</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/data-*"><code>data-*</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/dir"><code>dir</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/draggable"><code>draggable</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/enterkeyhint"><code>enterkeyhint</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/exportparts"><code>exportparts</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/hidden"><code>hidden</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/id"><code>id</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/inert"><code>inert</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/inputmode"><code>inputmode</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/is"><code>is</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/itemid"><code>itemid</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/itemprop"><code>itemprop</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/itemref"><code>itemref</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/itemscope"><code>itemscope</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/itemtype"><code>itemtype</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/lang"><code>lang</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/nonce"><code>nonce</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/part"><code>part</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/popover"><code>popover</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/slot"><code>slot</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/spellcheck"><code>spellcheck</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/style"><code>style</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/tabindex"><code>tabindex</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/title"><code>title</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/translate"><code>translate</code></a></li><li><a href="/ja/docs/Web/HTML/Global_attributes/virtualkeyboardpolicy"><code>virtualkeyboardpolicy</code></a><abbr class="icon icon-experimental" title="Experimental. Expect behavior to change in the future."> <span class="visually-hidden">Experimental</span> </abbr></li><li><a href="/ja/docs/Web/HTML/Global_attributes/writingsuggestions"><code>writingsuggestions</code></a></li></ol> </details> </li> <li class="toggle"> <details> <summary>Attributes</summary> <ol> <li><a href="/ja/docs/Web/HTML/Attributes/accept">accept</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/autocomplete">autocomplete</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/capture">capture</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/crossorigin">crossorigin</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/dirname">dirname</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/disabled">disabled</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/elementtiming">elementtiming</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/for">for</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/max">max</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/maxlength">maxlength</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/min">min</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/minlength">minlength</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/multiple">multiple</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/pattern">pattern</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/placeholder">placeholder</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/readonly">readonly</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/rel">rel</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/required">required</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/size">size</a></li> <li><a href="/ja/docs/Web/HTML/Attributes/step">step</a></li> </ol> </details> </li> <li class="toggle"> <details> <summary><code><input></code> 型</summary> <ol><li><a href="/ja/docs/Web/HTML/Element/input/button"><code><input type="button"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/checkbox"><code><input type="checkbox"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/color"><code><input type="color"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/date"><code><input type="date"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/datetime-local"><code><input type="datetime-local"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/email"><code><input type="email"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/file"><code><input type="file"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/hidden"><code><input type="hidden"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/image"><code><input type="image"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/month"><code><input type="month"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/number"><code><input type="number"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/password"><code><input type="password"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/radio"><code><input type="radio"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/range"><code><input type="range"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/reset"><code><input type="reset"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/search"><code><input type="search"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/submit"><code><input type="submit"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/tel"><code><input type="tel"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/text"><code><input type="text"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/time"><code><input type="time"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/url"><code><input type="url"></code></a></li><li><a href="/ja/docs/Web/HTML/Element/input/week"><code><input type="week"></code></a></li></ol> </details> </li> <li class="section no-link">Guides</li> <li> <ol> <li><a href="/ja/docs/Web/HTML/Content_categories">コンテンツカテゴリー</a></li> <li><a href="/ja/docs/Glossary/Block-level_content">Block-level elements</a></li> <li><a href="/ja/docs/Glossary/Inline-level_content">Inline elements</a></li> <li><a href="/ja/docs/Web/HTML/Quirks_Mode_and_Standards_Mode">Quirks Mode and Standards Mode</a></li> <li><a href="/ja/docs/Web/HTML/Date_and_time_formats">Date and time formats used in HTML</a></li> <li><a href="/ja/docs/Web/HTML/Constraint_validation">制約検証</a></li> <li><a href="/ja/docs/Web/HTML/Microdata">Microdata</a></li> <li><a href="/ja/docs/Web/HTML/microformats">Microformats</a></li> <li><a href="/ja/docs/Web/HTML/Viewport_meta_tag">Viewport meta tag</a></li> <li><a href="/ja/docs/Web/HTML/CORS_enabled_image">Allowing cross-origin use of images and canvas</a></li> </ol> </li> </ol> </div></div><section class="place side"></section></nav></aside><div class="toc-container"><aside class="toc"><nav><div class="document-toc-container"><section class="document-toc"><header><h2 class="document-toc-heading">この記事では</h2></header><ul class="document-toc-list"><li class="document-toc-item "><a class="document-toc-link" href="#試してみましょう">試してみましょう</a></li><li class="document-toc-item "><a class="document-toc-link" href="#属性">属性</a></li><li class="document-toc-item "><a class="document-toc-link" href="#使用上の注意">使用上の注意</a></li><li class="document-toc-item "><a class="document-toc-link" href="#例">例</a></li><li class="document-toc-item "><a class="document-toc-link" href="#技術的概要">技術的概要</a></li><li class="document-toc-item "><a class="document-toc-link" href="#仕様書">仕様書</a></li><li class="document-toc-item "><a class="document-toc-link" href="#ブラウザーの互換性">ブラウザーの互換性</a></li><li class="document-toc-item "><a class="document-toc-link" href="#関連情報">関連情報</a></li></ul></section></div></nav></aside><section class="place side"></section></div></div><main id="content" class="main-content "><article class="main-page-content" lang="ja"><header><h1><summary>: 概要明示要素</h1></header><div class="section-content"><p><strong><code><summary></code></strong> は <a href="/ja/docs/Web/HTML">HTML</a> の要素で、 <a href="/ja/docs/Web/HTML/Element/details"><code><details></code></a> 要素の折りたたみボックスの要約、キャプション、説明、凡例を表します。 <code><summary></code> 要素をクリックすると、親の <code><details></code> 要素の開閉状態を切り替えることができます。</p></div><section aria-labelledby="試してみましょう"><h2 id="試してみましょう"><a href="#試してみましょう">試してみましょう</a></h2><div class="section-content"><iframe class="interactive is-tabbed-shorter-height" height="200" src="https://interactive-examples.mdn.mozilla.net/pages/tabbed/summary.html" title="MDN Web Docs Interactive Example" allow="clipboard-write" loading="lazy"></iframe></div></section><section aria-labelledby="属性"><h2 id="属性"><a href="#属性">属性</a></h2><div class="section-content"><p>この要素は<a href="/ja/docs/Web/HTML/Global_attributes">グローバル属性</a>のみを持ちます。</p></div></section><section aria-labelledby="使用上の注意"><h2 id="使用上の注意"><a href="#使用上の注意">使用上の注意</a></h2><div class="section-content"><p><code><summary></code> 要素の中身には、見出しコンテンツ、プレーンテキスト、段落内で使用できる HTML が入れられます。</p> <p><code><summary></code> 要素は、 <code><details></code> 要素の最初の子として<em>のみ</em>使用できます。ユーザーがこの概要をクリックすると、親の <code><details></code> 要素が開閉し、 <a href="/ja/docs/Web/API/HTMLElement/toggle_event" title="toggle"><code>toggle</code></a> イベントが <code><details></code> 要素に送信され、状態が変化したことを知ることができます。</p> <p><code><details></code> の内容は、<code><summary></code> の<a href="/ja/docs/Glossary/Accessible_description">アクセシブル説明</a>となります。</p></div></section><section aria-labelledby="既定のラベルテキスト"><h3 id="既定のラベルテキスト"><a href="#既定のラベルテキスト">既定のラベルテキスト</a></h3><div class="section-content"><p><code><details></code> 要素の最初の子が <code><summary></code> 要素でない場合、<a href="/ja/docs/Glossary/User_agent">ユーザーエージェント</a>は既定の文字列（ふつうは「詳細」）を折りたたみボックスのラベルとして使用します。</p></div></section><section aria-labelledby="既定のスタイル"><h3 id="既定のスタイル"><a href="#既定のスタイル">既定のスタイル</a></h3><div class="section-content"><p>HTML 仕様書では、<code><summary></code> の既定のスタイルに <code>display: list-item</code> が含まれています。これで、ラベルの隣に既定で（多くは三角形で）表示される折りたたみウィジェットとして表示されるアイコンを変更したり削除したりすることができます。</p> <p>スタイルを <code>display: block</code> に変更すると、展開用の三角印を削除することができます。</p> <p>詳しくは<a href="#%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%83%BC%E3%81%AE%E4%BA%92%E6%8F%9B%E6%80%A7">ブラウザーの互換性</a>の節をご覧ください。すべてのブラウザーがこの要素の機能すべてに対応しているわけではありません。</p> <p>Safari などの Webkit ベースのブラウザーでは、標準外の CSS 擬似要素 <code>::-webkit-details-marker</code> によって、アイコンの表示を制御することが可能です。三角形の表示を消すには、 <code>summary::-webkit-details-marker { display: none }</code> を使用してください。</p></div></section><section aria-labelledby="例"><h2 id="例"><a href="#例">例</a></h2><div class="section-content"><p>以下に <code><summary></code> を使用している例をいくつか示します。<a href="/ja/docs/Web/HTML/Element/details"><code><details></code></a> 要素のドキュメントにもいくつか例があります。</p></div></section><section aria-labelledby="基本的な例"><h3 id="基本的な例"><a href="#基本的な例">基本的な例</a></h3><div class="section-content"><p><a href="/ja/docs/Web/HTML/Element/details"><code><details></code></a> 要素の中で <code><summary></code> の使用を示す簡単な例です。</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><details open> <summary>Overview</summary> <ol> <li>Cash on hand: $500.00</li> <li>Current invoice: $75.30</li> <li>Due date: 5/6/19</li> </ol> </details> </code></pre></div> <h4 id="結果">結果</h4><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="Basic example sample" id="frame_basic_example" width="650" height="120" src="about:blank" data-live-path="/ja/docs/Web/HTML/Element/summary" data-live-id="basic_example" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="見出しとしての概要"><h3 id="見出しとしての概要"><a href="#見出しとしての概要">見出しとしての概要</a></h3><div class="section-content"><p>次のように、 <code><summary></code> の中で見出し要素を使用することができます。</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><details open> <summary><h4>Overview</h4></summary> <ol> <li>Cash on hand: $500.00</li> <li>Current invoice: $75.30</li> <li>Due date: 5/6/19</li> </ol> </details> </code></pre></div> <h4 id="結果_2">結果</h4><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="Summaries as headings sample" id="frame_summaries_as_headings" width="650" height="120" src="about:blank" data-live-path="/ja/docs/Web/HTML/Element/summary" data-live-id="summaries_as_headings" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div> <p>これは現在のところ、間隔の問題をいくつか抱えており、 CSS を使用して修正することができます。</p> <div class="notecard warning"> <p><strong>警告:</strong> <code><summary></code> 要素の既定のロールは <a href="/ja/docs/Web/Accessibility/ARIA/Roles/button_role">button</a>（子要素からはすべてのロールを外す）ですので、この例はスクリーンリーダーのような支援技術のユーザーには動作しません。<code><h4></code> のロールが削除されますので、これらのユーザーからは見出しとして扱われなくなります。</p> </div></div></section><section aria-labelledby="概要の中の_html"><h3 id="概要の中の_html"><a href="#概要の中の_html">概要の中の HTML</a></h3><div class="section-content"><p>この例は、 <code><summary></code> 要素にいくらか意味を追加して、ラベルを重要であると示します。</p> <div class="code-example"><div class="example-header"><span class="language-name">html</span></div><pre class="brush: html notranslate"><code><details open> <summary><strong>Overview</strong></summary> <ol> <li>Cash on hand: $500.00</li> <li>Current invoice: $75.30</li> <li>Due date: 5/6/19</li> </ol> </details> </code></pre></div> <h4 id="結果_3">結果</h4><div class="code-example"><div class="example-header"></div><iframe class="sample-code-frame" title="HTML in summaries sample" id="frame_html_in_summaries" width="650" height="120" src="about:blank" data-live-path="/ja/docs/Web/HTML/Element/summary" data-live-id="html_in_summaries" sandbox="allow-same-origin allow-scripts" loading="lazy"></iframe></div></div></section><section aria-labelledby="技術的概要"><h2 id="技術的概要"><a href="#技術的概要">技術的概要</a></h2><div class="section-content"><figure class="table-container"><table class="properties"> <tbody> <tr> <th scope="row"><a href="/ja/docs/Web/HTML/Content_categories">コンテンツカテゴリー</a></th> <td>なし</td> </tr> <tr> <th scope="row">許可されている内容</th> <td><a href="/ja/docs/Web/HTML/Content_categories#記述コンテンツ">記述コンテンツ</a>、任意で<a href="/ja/docs/Web/HTML/Content_categories#見出しコンテンツ">見出しコンテンツ</a>を交ぜることができる</td> </tr> <tr> <th scope="row">タグの省略</th> <td>不可。開始タグと終了タグの両方が必要。</td> </tr> <tr> <th scope="row">許可されている親要素</th> <td><a href="/ja/docs/Web/HTML/Element/details"><code><details></code></a> 要素</td> </tr> <tr> <th scope="row">暗黙の ARIA ロール</th> <td><a href="https://www.w3.org/TR/html-aria/#dfn-no-corresponding-role" class="external" target="_blank">対応するロールなし</a></td> </tr> <tr> <th scope="row">許可されている ARIA ロール</th> <td>許可されている <code>role</code> なし</td> </tr> <tr> <th scope="row">DOM インターフェイス</th> <td><a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></td> </tr> </tbody> </table></figure></div></section><h2 id="仕様書"><a href="#仕様書">仕様書</a></h2><table class="standard-table"><thead><tr><th scope="col">Specification</th></tr></thead><tbody><tr><td><a href="https://html.spec.whatwg.org/multipage/interactive-elements.html#the-summary-element">HTML Standard <br/><small># the-summary-element</small></a></td></tr></tbody></table><h2 id="ブラウザーの互換性"><a href="#ブラウザーの互換性">ブラウザーの互換性</a></h2><p>BCD tables only load in the browser<noscript> with JavaScript enabled. 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Content available under <a href="/ja/docs/MDN/Writing_guidelines/Attrib_copyright_license">a Creative Commons license</a>.</p></div></div></footer></div><script type="application/json" id="hydration">{"url":"/ja/docs/Web/HTML/Element/summary","doc":{"isMarkdown":true,"isTranslated":true,"isActive":true,"flaws":{},"title":"<summary>: 概要明示要素","mdn_url":"/ja/docs/Web/HTML/Element/summary","locale":"ja","native":"日本語","browserCompat":["html.elements.summary"],"sidebarHTML":"\n <ol>\n <li class=\"section\"><a href=\"/ja/docs/Web/HTML\">HTML</a></li>\n <li class=\"section\"><a href=\"/ja/docs/Learn/HTML\">チュートリアル</a></li>\n <li><a href=\"/ja/docs/Learn/Getting_started_with_the_web/HTML_basics\">HTML の基本</a></li>\n <li class=\"toggle\">\n <details>\n <summary>HTML 入門</summary>\n <ol>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML\">HTML 入門の概要</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Getting_started\">HTML を始めよう</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/The_head_metadata_in_HTML\">ヘッド部には何が入る? HTML のメタデータ</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/HTML_text_fundamentals\">HTML テキストの基礎</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Creating_hyperlinks\">ハイパーリンクの作成</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Advanced_text_formatting\">高度なテキスト整形</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Document_and_website_structure\">文書とウェブサイトの構造</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Debugging_HTML\">HTML のデバッグ</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Marking_up_a_letter\">評価課題: 手紙のマークアップ</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Introduction_to_HTML/Structuring_a_page_of_content\">評価課題: コンテンツのページの構造化</a></li>\n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>マルチメディアとその埋め込み</summary>\n <ol>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding\">マルチメディアとその埋め込みの概要</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Images_in_HTML\">HTML の画像</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Video_and_audio_content\">動画と音声のコンテンツ</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Other_embedding_technologies\">object から iframe まで — その他の埋め込み技術</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Adding_vector_graphics_to_the_Web\">ウェブへのベクターグラフィックの追加</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Responsive_images\">レスポンシブ画像</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Multimedia_and_embedding/Mozilla_splash_page\">評価課題: Mozilla のスプラッシュページ</a></li>\n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>HTML の表</summary>\n <ol>\n <li><a href=\"/ja/docs/Learn/HTML/Tables\">HTML の表の概要</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Tables/Basics\">HTML の表の基本</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Tables/Advanced\">HTML 表の高度な機能とアクセシビリティ</a></li>\n <li><a href=\"/ja/docs/Learn/HTML/Tables/Structuring_planet_data\">評価課題: 太陽系の惑星データの構造化</a></li>\n </ol>\n </details>\n </li>\n <li class=\"section\"><a href=\"/ja/docs/Web/HTML/Reference\">リファレンス</a></li>\n <li class=\"toggle\">\n <details open=\"\">\n <summary>HTML 要素</summary>\n <ol><li><a href=\"/ja/docs/Web/HTML/Element/a\"><code><a></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/abbr\"><code><abbr></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/acronym\"><code><acronym></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/address\"><code><address></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/area\"><code><area></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/article\"><code><article></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/aside\"><code><aside></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/audio\"><code><audio></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/b\"><code><b></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/base\"><code><base></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/bdi\"><code><bdi></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/bdo\"><code><bdo></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/big\"><code><big></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/blockquote\"><code><blockquote></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/body\"><code><body></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/br\"><code><br></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/button\"><code><button></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/canvas\"><code><canvas></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/caption\"><code><caption></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/center\"><code><center></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/cite\"><code><cite></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/code\"><code><code></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/col\"><code><col></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/colgroup\"><code><colgroup></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/data\"><code><data></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/datalist\"><code><datalist></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dd\"><code><dd></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/del\"><code><del></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dfn\"><code><dfn></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dialog\"><code><dialog></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dir\"><code><dir></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/div\"><code><div></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dl\"><code><dl></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/dt\"><code><dt></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/em\"><code><em></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/embed\"><code><embed></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/fencedframe\"><code><fencedframe></code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/fieldset\"><code><fieldset></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/figcaption\"><code><figcaption></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/figure\"><code><figure></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/font\"><code><font></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/footer\"><code><footer></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/form\"><code><form></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/frame\"><code><frame></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/frameset\"><code><frameset></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/Heading_Elements\"><code><h1></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/head\"><code><head></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/header\"><code><header></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/hgroup\"><code><hgroup></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/hr\"><code><hr></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/html\"><code><html></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/i\"><code><i></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/iframe\"><code><iframe></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/img\"><code><img></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input\"><code><input></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/ins\"><code><ins></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/kbd\"><code><kbd></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/label\"><code><label></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/legend\"><code><legend></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/li\"><code><li></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/link\"><code><link></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/main\"><code><main></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/map\"><code><map></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/mark\"><code><mark></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/marquee\"><code><marquee></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/menu\"><code><menu></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/meta\"><code><meta></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/meter\"><code><meter></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/nav\"><code><nav></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/nobr\"><code><nobr></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/noembed\"><code><noembed></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/noframes\"><code><noframes></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/noscript\"><code><noscript></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/object\"><code><object></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/ol\"><code><ol></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/optgroup\"><code><optgroup></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/option\"><code><option></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/output\"><code><output></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/p\"><code><p></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/param\"><code><param></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/picture\"><code><picture></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/plaintext\"><code><plaintext></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/portal\"><code><portal></code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/pre\"><code><pre></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/progress\"><code><progress></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/q\"><code><q></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/rb\"><code><rb></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/rp\"><code><rp></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/rt\"><code><rt></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/rtc\"><code><rtc></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/ruby\"><code><ruby></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/s\"><code><s></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/samp\"><code><samp></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/script\"><code><script></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/search\"><code><search></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/section\"><code><section></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/select\"><code><select></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/slot\"><code><slot></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/small\"><code><small></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/source\"><code><source></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/span\"><code><span></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/strike\"><code><strike></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/strong\"><code><strong></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/style\"><code><style></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/sub\"><code><sub></code></a></li><li><em><a href=\"/ja/docs/Web/HTML/Element/summary\" aria-current=\"page\"><code><summary></code></a></em></li><li><a href=\"/ja/docs/Web/HTML/Element/sup\"><code><sup></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/table\"><code><table></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/tbody\"><code><tbody></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/td\"><code><td></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/template\"><code><template></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/textarea\"><code><textarea></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/tfoot\"><code><tfoot></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/th\"><code><th></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/thead\"><code><thead></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/time\"><code><time></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/title\"><code><title></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/tr\"><code><tr></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/track\"><code><track></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/tt\"><code><tt></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Element/u\"><code><u></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/ul\"><code><ul></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/var\"><code><var></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/video\"><code><video></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/wbr\"><code><wbr></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/xmp\"><code><xmp></code></a><abbr class=\"icon icon-deprecated\" title=\"Deprecated. Not for use in new websites.\">\n <span class=\"visually-hidden\">非推奨</span>\n</abbr></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>グローバル属性</summary>\n <ol><li><a href=\"/ja/docs/Web/HTML/Global_attributes/accesskey\"><code>accesskey</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/anchor\"><code>anchor</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr><abbr class=\"icon icon-nonstandard\" title=\"Non-standard. Check cross-browser support before using.\">\n <span class=\"visually-hidden\">Non-standard</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/autocapitalize\"><code>autocapitalize</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/autocorrect\"><code>autocorrect</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/autofocus\"><code>autofocus</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/class\"><code>class</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/contenteditable\"><code>contenteditable</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/data-*\"><code>data-*</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/dir\"><code>dir</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/draggable\"><code>draggable</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/enterkeyhint\"><code>enterkeyhint</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/exportparts\"><code>exportparts</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/hidden\"><code>hidden</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/id\"><code>id</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/inert\"><code>inert</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/inputmode\"><code>inputmode</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/is\"><code>is</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/itemid\"><code>itemid</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/itemprop\"><code>itemprop</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/itemref\"><code>itemref</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/itemscope\"><code>itemscope</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/itemtype\"><code>itemtype</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/lang\"><code>lang</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/nonce\"><code>nonce</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/part\"><code>part</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/popover\"><code>popover</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/slot\"><code>slot</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/spellcheck\"><code>spellcheck</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/style\"><code>style</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/tabindex\"><code>tabindex</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/title\"><code>title</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/translate\"><code>translate</code></a></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/virtualkeyboardpolicy\"><code>virtualkeyboardpolicy</code></a><abbr class=\"icon icon-experimental\" title=\"Experimental. Expect behavior to change in the future.\">\n <span class=\"visually-hidden\">Experimental</span>\n</abbr></li><li><a href=\"/ja/docs/Web/HTML/Global_attributes/writingsuggestions\"><code>writingsuggestions</code></a></li></ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary>Attributes</summary>\n <ol>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/accept\">accept</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/autocomplete\">autocomplete</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/capture\">capture</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/crossorigin\">crossorigin</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/dirname\">dirname</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/disabled\">disabled</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/elementtiming\">elementtiming</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/for\">for</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/max\">max</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/maxlength\">maxlength</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/min\">min</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/minlength\">minlength</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/multiple\">multiple</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/pattern\">pattern</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/placeholder\">placeholder</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/readonly\">readonly</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/rel\">rel</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/required\">required</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/size\">size</a></li>\n \n <li><a href=\"/ja/docs/Web/HTML/Attributes/step\">step</a></li>\n \n </ol>\n </details>\n </li>\n <li class=\"toggle\">\n <details>\n <summary><code><input></code> 型</summary>\n <ol><li><a href=\"/ja/docs/Web/HTML/Element/input/button\"><code><input type=\"button\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/checkbox\"><code><input type=\"checkbox\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/color\"><code><input type=\"color\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/date\"><code><input type=\"date\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/datetime-local\"><code><input type=\"datetime-local\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/email\"><code><input type=\"email\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/file\"><code><input type=\"file\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/hidden\"><code><input type=\"hidden\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/image\"><code><input type=\"image\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/month\"><code><input type=\"month\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/number\"><code><input type=\"number\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/password\"><code><input type=\"password\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/radio\"><code><input type=\"radio\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/range\"><code><input type=\"range\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/reset\"><code><input type=\"reset\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/search\"><code><input type=\"search\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/submit\"><code><input type=\"submit\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/tel\"><code><input type=\"tel\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/text\"><code><input type=\"text\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/time\"><code><input type=\"time\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/url\"><code><input type=\"url\"></code></a></li><li><a href=\"/ja/docs/Web/HTML/Element/input/week\"><code><input type=\"week\"></code></a></li></ol>\n </details>\n </li>\n <li class=\"section no-link\">Guides</li>\n <li>\n <ol>\n <li><a href=\"/ja/docs/Web/HTML/Content_categories\">コンテンツカテゴリー</a></li>\n <li><a href=\"/ja/docs/Glossary/Block-level_content\">Block-level elements</a></li>\n <li><a href=\"/ja/docs/Glossary/Inline-level_content\">Inline elements</a></li>\n <li><a href=\"/ja/docs/Web/HTML/Quirks_Mode_and_Standards_Mode\">Quirks Mode and Standards Mode</a></li>\n <li><a href=\"/ja/docs/Web/HTML/Date_and_time_formats\">Date and time formats used in HTML</a></li>\n <li><a href=\"/ja/docs/Web/HTML/Constraint_validation\">制約検証</a></li>\n <li><a href=\"/ja/docs/Web/HTML/Microdata\">Microdata</a></li>\n <li><a href=\"/ja/docs/Web/HTML/microformats\">Microformats</a></li>\n <li><a href=\"/ja/docs/Web/HTML/Viewport_meta_tag\">Viewport meta tag</a></li>\n <li><a href=\"/ja/docs/Web/HTML/CORS_enabled_image\">Allowing cross-origin use of images and canvas</a></li>\n </ol>\n </li>\n </ol>\n","sidebarMacro":"HTMLSidebar","body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p><strong><code><summary></code></strong> は <a href=\"/ja/docs/Web/HTML\">HTML</a> の要素で、 <a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a> 要素の折りたたみボックスの要約、キャプション、説明、凡例を表します。 <code><summary></code> 要素をクリックすると、親の <code><details></code> 要素の開閉状態を切り替えることができます。</p>"}},{"type":"prose","value":{"id":"試してみましょう","title":"試してみましょう","isH3":false,"content":"<iframe class=\"interactive is-tabbed-shorter-height\" height=\"200\" src=\"https://interactive-examples.mdn.mozilla.net/pages/tabbed/summary.html\" title=\"MDN Web Docs Interactive Example\" allow=\"clipboard-write\" loading=\"lazy\"></iframe>"}},{"type":"prose","value":{"id":"属性","title":"属性","isH3":false,"content":"<p>この要素は<a href=\"/ja/docs/Web/HTML/Global_attributes\">グローバル属性</a>のみを持ちます。</p>"}},{"type":"prose","value":{"id":"使用上の注意","title":"使用上の注意","isH3":false,"content":"<p><code><summary></code> 要素の中身には、見出しコンテンツ、プレーンテキスト、段落内で使用できる HTML が入れられます。</p>\n<p><code><summary></code> 要素は、 <code><details></code> 要素の最初の子として<em>のみ</em>使用できます。ユーザーがこの概要をクリックすると、親の <code><details></code> 要素が開閉し、 <a href=\"/ja/docs/Web/API/HTMLElement/toggle_event\" title=\"toggle\"><code>toggle</code></a> イベントが <code><details></code> 要素に送信され、状態が変化したことを知ることができます。</p>\n<p><code><details></code> の内容は、<code><summary></code> の<a href=\"/ja/docs/Glossary/Accessible_description\">アクセシブル説明</a>となります。</p>"}},{"type":"prose","value":{"id":"既定のラベルテキスト","title":"既定のラベルテキスト","isH3":true,"content":"<p><code><details></code> 要素の最初の子が <code><summary></code> 要素でない場合、<a href=\"/ja/docs/Glossary/User_agent\">ユーザーエージェント</a>は既定の文字列（ふつうは「詳細」）を折りたたみボックスのラベルとして使用します。</p>"}},{"type":"prose","value":{"id":"既定のスタイル","title":"既定のスタイル","isH3":true,"content":"<p>HTML 仕様書では、<code><summary></code> の既定のスタイルに <code>display: list-item</code> が含まれています。これで、ラベルの隣に既定で（多くは三角形で）表示される折りたたみウィジェットとして表示されるアイコンを変更したり削除したりすることができます。</p>\n<p>スタイルを <code>display: block</code> に変更すると、展開用の三角印を削除することができます。</p>\n<p>詳しくは<a href=\"#%E3%83%96%E3%83%A9%E3%82%A6%E3%82%B6%E3%83%BC%E3%81%AE%E4%BA%92%E6%8F%9B%E6%80%A7\">ブラウザーの互換性</a>の節をご覧ください。すべてのブラウザーがこの要素の機能すべてに対応しているわけではありません。</p>\n<p>Safari などの Webkit ベースのブラウザーでは、標準外の CSS 擬似要素 <code>::-webkit-details-marker</code> によって、アイコンの表示を制御することが可能です。三角形の表示を消すには、 <code>summary::-webkit-details-marker { display: none }</code> を使用してください。</p>"}},{"type":"prose","value":{"id":"例","title":"例","isH3":false,"content":"<p>以下に <code><summary></code> を使用している例をいくつか示します。<a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a> 要素のドキュメントにもいくつか例があります。</p>"}},{"type":"prose","value":{"id":"基本的な例","title":"基本的な例","isH3":true,"content":"<p><a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a> 要素の中で <code><summary></code> の使用を示す簡単な例です。</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><details open>\n <summary>Overview</summary>\n <ol>\n <li>Cash on hand: $500.00</li>\n <li>Current invoice: $75.30</li>\n <li>Due date: 5/6/19</li>\n </ol>\n</details>\n</code></pre></div>\n<h4 id=\"結果\">結果</h4><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"Basic example sample\" id=\"frame_basic_example\" width=\"650\" height=\"120\" src=\"about:blank\" data-live-path=\"/ja/docs/Web/HTML/Element/summary\" data-live-id=\"basic_example\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"見出しとしての概要","title":"見出しとしての概要","isH3":true,"content":"<p>次のように、 <code><summary></code> の中で見出し要素を使用することができます。</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><details open>\n <summary><h4>Overview</h4></summary>\n <ol>\n <li>Cash on hand: $500.00</li>\n <li>Current invoice: $75.30</li>\n <li>Due date: 5/6/19</li>\n </ol>\n</details>\n</code></pre></div>\n<h4 id=\"結果_2\">結果</h4><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"Summaries as headings sample\" id=\"frame_summaries_as_headings\" width=\"650\" height=\"120\" src=\"about:blank\" data-live-path=\"/ja/docs/Web/HTML/Element/summary\" data-live-id=\"summaries_as_headings\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>\n<p>これは現在のところ、間隔の問題をいくつか抱えており、 CSS を使用して修正することができます。</p>\n<div class=\"notecard warning\">\n <p><strong>警告:</strong> <code><summary></code> 要素の既定のロールは <a href=\"/ja/docs/Web/Accessibility/ARIA/Roles/button_role\">button</a>（子要素からはすべてのロールを外す）ですので、この例はスクリーンリーダーのような支援技術のユーザーには動作しません。<code><h4></code> のロールが削除されますので、これらのユーザーからは見出しとして扱われなくなります。</p>\n</div>"}},{"type":"prose","value":{"id":"概要の中の_html","title":"概要の中の HTML","isH3":true,"content":"<p>この例は、 <code><summary></code> 要素にいくらか意味を追加して、ラベルを重要であると示します。</p>\n<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">html</span></div><pre class=\"brush: html notranslate\"><code><details open>\n <summary><strong>Overview</strong></summary>\n <ol>\n <li>Cash on hand: $500.00</li>\n <li>Current invoice: $75.30</li>\n <li>Due date: 5/6/19</li>\n </ol>\n</details>\n</code></pre></div>\n<h4 id=\"結果_3\">結果</h4><div class=\"code-example\"><div class=\"example-header\"></div><iframe class=\"sample-code-frame\" title=\"HTML in summaries sample\" id=\"frame_html_in_summaries\" width=\"650\" height=\"120\" src=\"about:blank\" data-live-path=\"/ja/docs/Web/HTML/Element/summary\" data-live-id=\"html_in_summaries\" sandbox=\"allow-same-origin allow-scripts\" loading=\"lazy\"></iframe></div>"}},{"type":"prose","value":{"id":"技術的概要","title":"技術的概要","isH3":false,"content":"<figure class=\"table-container\"><table class=\"properties\">\n <tbody>\n <tr>\n <th scope=\"row\"><a href=\"/ja/docs/Web/HTML/Content_categories\">コンテンツカテゴリー</a></th>\n <td>なし</td>\n </tr>\n <tr>\n <th scope=\"row\">許可されている内容</th>\n <td><a href=\"/ja/docs/Web/HTML/Content_categories#記述コンテンツ\">記述コンテンツ</a>、任意で<a href=\"/ja/docs/Web/HTML/Content_categories#見出しコンテンツ\">見出しコンテンツ</a>を交ぜることができる</td>\n </tr>\n <tr>\n <th scope=\"row\">タグの省略</th>\n <td>不可。開始タグと終了タグの両方が必要。</td>\n </tr>\n <tr>\n <th scope=\"row\">許可されている親要素</th>\n <td><a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a> 要素</td>\n </tr>\n <tr>\n <th scope=\"row\">暗黙の ARIA ロール</th>\n <td><a href=\"https://www.w3.org/TR/html-aria/#dfn-no-corresponding-role\" class=\"external\" target=\"_blank\">対応するロールなし</a></td>\n </tr>\n <tr>\n <th scope=\"row\">許可されている ARIA ロール</th>\n <td>許可されている <code>role</code> なし</td>\n </tr>\n <tr>\n <th scope=\"row\">DOM インターフェイス</th>\n <td><a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></td>\n </tr>\n </tbody>\n</table></figure>"}},{"type":"specifications","value":{"title":"仕様書","id":"仕様書","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/interactive-elements.html#the-summary-element","title":"HTML Standard"}],"query":"html.elements.summary"}},{"type":"browser_compatibility","value":{"title":"ブラウザーの互換性","id":"ブラウザーの互換性","isH3":false,"query":"html.elements.summary"}},{"type":"prose","value":{"id":"関連情報","title":"関連情報","isH3":false,"content":"<ul>\n <li><a href=\"/ja/docs/Web/HTML/Element/details\"><code><details></code></a></li>\n</ul>"}}],"toc":[{"text":"試してみましょう","id":"試してみましょう"},{"text":"属性","id":"属性"},{"text":"使用上の注意","id":"使用上の注意"},{"text":"例","id":"例"},{"text":"技術的概要","id":"技術的概要"},{"text":"仕様書","id":"仕様書"},{"text":"ブラウザーの互換性","id":"ブラウザーの互換性"},{"text":"関連情報","id":"関連情報"}],"summary":"<summary> は HTML の要素で、 <details> 要素の折りたたみボックスの要約、キャプション、説明、凡例を表します。 <summary> 要素をクリックすると、親の <details> 要素の開閉状態を切り替えることができます。","popularity":0,"modified":"2024-10-12T03:07:21.000Z","other_translations":[{"locale":"de","title":"<summary>: Das Disclosure-Summary-Element","native":"Deutsch"},{"locale":"en-US","title":"<summary>: The Disclosure Summary element","native":"English (US)"},{"locale":"fr","title":"<summary> : l'élément de révélation d'un résumé","native":"Français"},{"locale":"pt-BR","title":"summary","native":"Português (do Brasil)"},{"locale":"ru","title":"<summary>: The Disclosure Summary element","native":"Русский"},{"locale":"zh-CN","title":"<summary>：摘要展现元素","native":"中文 (简体)"}],"pageType":"unknown","source":{"folder":"ja/web/html/element/summary","github_url":"https://github.com/mdn/translated-content/blob/main/files/ja/web/html/element/summary/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/49cef3439819ced016855acf29e64349fb6f0438","filename":"index.md"},"short_title":"<summary>","parents":[{"uri":"/ja/docs/Web","title":"開発者向けのウェブ技術"},{"uri":"/ja/docs/Web/HTML","title":"HTML"},{"uri":"/ja/docs/Web/HTML/Element","title":"HTML 要素リファレンス"},{"uri":"/ja/docs/Web/HTML/Element/summary","title":"<summary>"}],"pageTitle":"<summary>: 概要明示要素 - HTML: ハイパーテキストマークアップ言語 | MDN","noIndexing":false}}</script></body></html>