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aria-label="breadcrumbs"><li property="itemListElement" typeof="ListItem"><a href="/ja/docs/Web" class="breadcrumb" property="item" typeof="WebPage"><span property="name">開発者向けのウェブ技術</span></a><meta property="position" content="1"/></li><li property="itemListElement" typeof="ListItem"><a href="/ja/docs/Web/API" class="breadcrumb" property="item" typeof="WebPage"><span property="name">Web API</span></a><meta property="position" content="2"/></li><li property="itemListElement" typeof="ListItem"><a href="/ja/docs/Web/API/HTMLSelectElement" class="breadcrumb-current-page" property="item" typeof="WebPage"><span property="name">HTMLSelectElement</span></a><meta property="position" content="3"/></li></ol></nav><div class="article-actions"><button type="button" class="button action has-icon article-actions-toggle" aria-label="Article actions"><span class="button-wrap"><span class="icon icon-ellipses "></span><span class="article-actions-dialog-heading">Article Actions</span></span></button><ul class="article-actions-entries"><li class="article-actions-entry"><div class="languages-switcher-menu open-on-focus-within"><button id="languages-switcher-button" type="button" class="button action small has-icon languages-switcher-menu" aria-haspopup="menu"><span class="button-wrap"><span class="icon icon-language "></span>日本語</span></button><div class="hidden"><ul class="submenu language-menu " aria-labelledby="language-menu-button"><li class=" "><form class="submenu-item locale-redirect-setting"><div class="group"><label class="switch"><input type="checkbox" name="locale-redirect"/><span class="slider"></span><span class="label">Remember language</span></label><a href="https://github.com/orgs/mdn/discussions/739" rel="external noopener noreferrer" target="_blank" title="Enable this setting to automatically switch to this language when it's available. (Click to learn more.)"><span class="icon icon-question-mark "></span></a></div></form></li><li class=" "><a data-locale="en-US" href="/en-US/docs/Web/API/HTMLSelectElement" class="button submenu-item"><span>English (US)</span></a></li><li class=" "><a data-locale="de" href="/de/docs/Web/API/HTMLSelectElement" class="button submenu-item"><span>Deutsch</span><span title="Diese Übersetzung ist Teil eines Experiments."><span class="icon icon-experimental "></span></span></a></li><li class=" "><a data-locale="es" href="/es/docs/Web/API/HTMLSelectElement" class="button submenu-item"><span>Español</span></a></li><li class=" "><a data-locale="fr" href="/fr/docs/Web/API/HTMLSelectElement" class="button submenu-item"><span>Français</span></a></li></ul></div></div></li></ul></div></div></div></div><div class="container"><div class="notecard localized-content-note"><p><a href="/ja/docs/MDN/Community/Contributing/Translated_content#アクティブなロケール">このページはコミュニティーの尽力で英語から翻訳されました。MDN Web Docs コミュニティーについてもっと知り、仲間になるにはこちらから。</a></p></div></div><div class="main-wrapper"><div class="sidebar-container"><aside id="sidebar-quicklinks" class="sidebar"><button type="button" class="button action backdrop" aria-label="Collapse sidebar"><span class="button-wrap"></span></button><nav aria-label="Related Topics" class="sidebar-inner"><header class="sidebar-actions"><section class="sidebar-filter-container"><div class="sidebar-filter "><label id="sidebar-filter-label" class="sidebar-filter-label" for="sidebar-filter-input"><span class="icon icon-filter"></span><span class="visually-hidden">Filter sidebar</span></label><input id="sidebar-filter-input" autoComplete="off" class="sidebar-filter-input-field false" type="text" placeholder="Filter" value=""/><button type="button" class="button action has-icon clear-sidebar-filter-button"><span class="button-wrap"><span class="icon icon-cancel "></span><span class="visually-hidden">Clear filter input</span></span></button></div></section></header><div class="sidebar-inner-nav"><div class="in-nav-toc"><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="#プロパティ">プロパティ</a></li><li class="document-toc-item "><a class="document-toc-link" href="#メソッド">メソッド</a></li><li class="document-toc-item "><a class="document-toc-link" href="#イベント">イベント</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="#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></div><div class="sidebar-body"><ol><li class="section"><a href="/ja/docs/Web/API/HTML_DOM_API">HTML DOM API</a></li><li class="section"><em><a href="/ja/docs/Web/API/HTMLSelectElement" aria-current="page"><code>HTMLSelectElement</code></a></em></li><li class="toggle"><details open=""><summary>インスタンスプロパティ</summary><ol><li><a href="/ja/docs/Web/API/HTMLSelectElement/autocomplete"><code>autocomplete</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/disabled"><code>disabled</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/form"><code>form</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/labels"><code>labels</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/length"><code>length</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/multiple"><code>multiple</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/name"><code>name</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/options"><code>options</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/required"><code>required</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/selectedIndex"><code>selectedIndex</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/selectedOptions"><code>selectedOptions</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/size"><code>size</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/type"><code>type</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/validationMessage"><code>validationMessage</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/validity"><code>validity</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/value"><code>value</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/willValidate"><code>willValidate</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>インスタンスメソッド</summary><ol><li><a href="/ja/docs/Web/API/HTMLSelectElement/add"><code>add()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/checkValidity"><code>checkValidity()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/item"><code>item()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/namedItem"><code>namedItem()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/remove"><code>remove()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/reportValidity"><code>reportValidity()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/setCustomValidity"><code>setCustomValidity()</code></a></li><li><a href="/ja/docs/Web/API/HTMLSelectElement/showPicker"><code>showPicker()</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>継承</summary><ol><li><a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></li><li><a href="/ja/docs/Web/API/Element"><code>Element</code></a></li><li><a href="/ja/docs/Web/API/Node"><code>Node</code></a></li><li><a href="/ja/docs/Web/API/EventTarget"><code>EventTarget</code></a></li></ol></details></li><li class="toggle"><details open=""><summary>HTML DOM に関連するページ</summary><ol><li><a href="/ja/docs/Web/API/BeforeUnloadEvent"><code>BeforeUnloadEvent</code></a></li><li><a href="/ja/docs/Web/API/DOMStringMap"><code>DOMStringMap</code></a></li><li><a href="/ja/docs/Web/API/ErrorEvent"><code>ErrorEvent</code></a></li><li><a href="/ja/docs/Web/API/HTMLAnchorElement"><code>HTMLAnchorElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLAreaElement"><code>HTMLAreaElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLAudioElement"><code>HTMLAudioElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLBRElement"><code>HTMLBRElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLBaseElement"><code>HTMLBaseElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLBodyElement"><code>HTMLBodyElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLButtonElement"><code>HTMLButtonElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLCanvasElement"><code>HTMLCanvasElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDListElement"><code>HTMLDListElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDataElement"><code>HTMLDataElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDataListElement"><code>HTMLDataListElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDialogElement"><code>HTMLDialogElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDivElement"><code>HTMLDivElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLDocument"><code>HTMLDocument</code></a></li><li><a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLEmbedElement"><code>HTMLEmbedElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLFieldSetElement"><code>HTMLFieldSetElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLFormControlsCollection"><code>HTMLFormControlsCollection</code></a></li><li><a href="/ja/docs/Web/API/HTMLFormElement"><code>HTMLFormElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLFrameSetElement"><code>HTMLFrameSetElement</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/API/HTMLHRElement"><code>HTMLHRElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLHeadElement"><code>HTMLHeadElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLHeadingElement"><code>HTMLHeadingElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLHtmlElement"><code>HTMLHtmlElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLIFrameElement"><code>HTMLIFrameElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLImageElement"><code>HTMLImageElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLInputElement"><code>HTMLInputElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLLIElement"><code>HTMLLIElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLLabelElement"><code>HTMLLabelElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLLegendElement"><code>HTMLLegendElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLLinkElement"><code>HTMLLinkElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLMapElement"><code>HTMLMapElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLMediaElement"><code>HTMLMediaElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLMenuElement"><code>HTMLMenuElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLMetaElement"><code>HTMLMetaElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLMeterElement"><code>HTMLMeterElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLModElement"><code>HTMLModElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLOListElement"><code>HTMLOListElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLObjectElement"><code>HTMLObjectElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLOptGroupElement"><code>HTMLOptGroupElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLOptionElement"><code>HTMLOptionElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLOptionsCollection"><code>HTMLOptionsCollection</code></a></li><li><a href="/ja/docs/Web/API/HTMLOutputElement"><code>HTMLOutputElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLParagraphElement"><code>HTMLParagraphElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLPictureElement"><code>HTMLPictureElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLPreElement"><code>HTMLPreElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLProgressElement"><code>HTMLProgressElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLQuoteElement"><code>HTMLQuoteElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLScriptElement"><code>HTMLScriptElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLSourceElement"><code>HTMLSourceElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLSpanElement"><code>HTMLSpanElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLStyleElement"><code>HTMLStyleElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableCaptionElement"><code>HTMLTableCaptionElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableCellElement"><code>HTMLTableCellElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableColElement"><code>HTMLTableColElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableElement"><code>HTMLTableElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableRowElement"><code>HTMLTableRowElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTableSectionElement"><code>HTMLTableSectionElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTemplateElement"><code>HTMLTemplateElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTextAreaElement"><code>HTMLTextAreaElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTimeElement"><code>HTMLTimeElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTitleElement"><code>HTMLTitleElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLTrackElement"><code>HTMLTrackElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLUListElement"><code>HTMLUListElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLUnknownElement"><code>HTMLUnknownElement</code></a></li><li><a href="/ja/docs/Web/API/HTMLVideoElement"><code>HTMLVideoElement</code></a></li><li><a href="/ja/docs/Web/API/HashChangeEvent"><code>HashChangeEvent</code></a></li><li><a href="/ja/docs/Web/API/History"><code>History</code></a></li><li><a href="/ja/docs/Web/API/ImageData"><code>ImageData</code></a></li><li><a href="/ja/docs/Web/API/Location"><code>Location</code></a></li><li><a href="/ja/docs/Web/API/MessageChannel"><code>MessageChannel</code></a></li><li><a href="/ja/docs/Web/API/MessageEvent"><code>MessageEvent</code></a></li><li><a href="/ja/docs/Web/API/MessagePort"><code>MessagePort</code></a></li><li><a href="/ja/docs/Web/API/Navigator"><code>Navigator</code></a></li><li><a href="/ja/docs/Web/API/PageRevealEvent"><code>PageRevealEvent</code></a></li><li><a href="/ja/docs/Web/API/PageSwapEvent"><code>PageSwapEvent</code></a></li><li><a href="/ja/docs/Web/API/PageTransitionEvent"><code>PageTransitionEvent</code></a></li><li><a href="/ja/docs/Web/API/Plugin"><code>Plugin</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/API/PluginArray"><code>PluginArray</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/API/PromiseRejectionEvent"><code>PromiseRejectionEvent</code></a></li><li><a href="/ja/docs/Web/API/RadioNodeList"><code>RadioNodeList</code></a></li><li><a href="/ja/docs/Web/API/UserActivation"><code>UserActivation</code></a></li><li><a href="/ja/docs/Web/API/ValidityState"><code>ValidityState</code></a></li><li><a href="/ja/docs/Web/API/Window"><code>Window</code></a></li><li><a href="/ja/docs/Web/API/WorkletGlobalScope"><code>WorkletGlobalScope</code></a></li></ol></details></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="#プロパティ">プロパティ</a></li><li class="document-toc-item "><a class="document-toc-link" href="#メソッド">メソッド</a></li><li class="document-toc-item "><a class="document-toc-link" href="#イベント">イベント</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="#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>HTMLSelectElement</h1><details class="baseline-indicator high"><summary><span class="indicator" role="img" aria-label="Baseline Check"></span><div class="status-title">Baseline <span class="not-bold">Widely available</span> *</div><div class="browsers"><span class="engine" title="Supported in Chrome and Edge"><span class="browser chrome supported" role="img" aria-label="Chrome check"></span><span class="browser edge supported" role="img" aria-label="Edge check"></span></span><span class="engine" title="Supported in Firefox"><span class="browser firefox supported" role="img" aria-label="Firefox check"></span></span><span class="engine" title="Supported in Safari"><span class="browser safari supported" role="img" aria-label="Safari check"></span></span></div><span class="icon icon-chevron "></span></summary><div class="extra"><p>This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.</p><p>* Some parts of this feature may have varying levels of support.</p><ul><li><a href="/ja/docs/Glossary/Baseline/Compatibility" data-glean="baseline_link_learn_more" target="_blank" class="learn-more">Learn more</a></li><li><a href="#ブラウザーの互換性" data-glean="baseline_link_bcd_table">See full compatibility</a></li><li><a href="https://survey.alchemer.com/s3/7634825/MDN-baseline-feedback?page=%2Fja%2Fdocs%2FWeb%2FAPI%2FHTMLSelectElement&level=high" data-glean="baseline_link_feedback" class="feedback-link" target="_blank" rel="noreferrer">Report feedback</a></li></ul></div></details></header><div class="section-content"><p><strong><code>HTMLSelectElement</code></strong> インターフェイスは HTML の <a href="/ja/docs/Web/HTML/Element/select"><code><select></code></a> 要素を表します。これらの要素は <a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a> インターフェイスを通じて他の HTML 要素のすべてのプロパティとメソッドも共有します。</p> <svg viewBox="-1 -1 650 42" preserveAspectRatio="xMinYMin meet"><a style="text-decoration: none;" href="/ja/docs/Web/API/EventTarget"> <rect x="0" y="0" width="88" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="44" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> EventTarget </text> </a><line x1="88" y1="14" x2="118" y2="14" stroke="#D4DDE4"></line><polyline points="88,14 98,9 98,19 88,14" stroke="#D4DDE4" fill="#fff"></polyline><a style="text-decoration: none;" href="/ja/docs/Web/API/Node"> <rect x="118" y="0" width="75" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="155.5" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> Node </text> </a><line x1="193" y1="14" x2="223" y2="14" stroke="#D4DDE4"></line><polyline points="193,14 203,9 203,19 193,14" stroke="#D4DDE4" fill="#fff"></polyline><a style="text-decoration: none;" href="/ja/docs/Web/API/Element"> <rect x="223" y="0" width="75" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="260.5" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> Element </text> </a><line x1="298" y1="14" x2="328" y2="14" stroke="#D4DDE4"></line><polyline points="298,14 308,9 308,19 298,14" stroke="#D4DDE4" fill="#fff"></polyline><a style="text-decoration: none;" href="/ja/docs/Web/API/HTMLElement"> <rect x="328" y="0" width="88" height="25" fill="#fff" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="372" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> HTMLElement </text> </a><line x1="416" y1="14" x2="446" y2="14" stroke="#D4DDE4"></line><polyline points="416,14 426,9 426,19 416,14" stroke="#D4DDE4" fill="#fff"></polyline><a style="text-decoration: none;" href="/ja/docs/Web/API/HTMLSelectElement" aria-current="page"> <rect x="446" y="0" width="136" height="25" fill="#F4F7F8" stroke="#D4DDE4" stroke-width="2px"></rect> <text x="514" y="16" font-size="10px" fill="#4D4E53" text-anchor="middle"> HTMLSelectElement </text> </a></svg></div><section aria-labelledby="プロパティ"><h2 id="プロパティ"><a href="#プロパティ">プロパティ</a></h2><div class="section-content"><p><em>このインターフェイスには <a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a>、<a href="/ja/docs/Web/API/Element"><code>Element</code></a>、<a href="/ja/docs/Web/API/Node"><code>Node</code></a> から継承したプロパティがあります。</em></p> <dl> <dt id="htmlselectelement.disabled"><a href="/ja/docs/Web/API/HTMLSelectElement/disabled"><code>HTMLSelectElement.disabled</code></a></dt> <dd> <p>論理値で、 HTML の <a href="/ja/docs/Web/HTML/Element/select#disabled"><code>disabled</code></a> 属性を反映し、コントロールが無効か否か、つまりクリックを受け付けるかどうかを示します。</p> </dd> <dt id="htmlselectelement.form"><a href="/ja/docs/Web/API/HTMLSelectElement/form"><code>HTMLSelectElement.form</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p><a href="/ja/docs/Web/API/HTMLFormElement"><code>HTMLFormElement</code></a> で、この要素が関連付けられているフォームを反映します。この要素が <a href="/ja/docs/Web/HTML/Element/form"><code><form></code></a> 要素に関連付けられていなければ、 <code>null</code> を返します。</p> </dd> <dt id="htmlselectelement.labels"><a href="/ja/docs/Web/API/HTMLSelectElement/labels"><code>HTMLSelectElement.labels</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p><a href="/ja/docs/Web/API/NodeList"><code>NodeList</code></a> で、この要素に関連付けられた <a href="/ja/docs/Web/HTML/Element/label"><code><label></code></a> 要素を表します。</p> </dd> <dt id="htmlselectelement.length"><a href="/ja/docs/Web/API/HTMLSelectElement/length"><code>HTMLSelectElement.length</code></a></dt> <dd> <p><code>unsigned long</code> で、 <a href="/ja/docs/Web/HTML/Element/option"><code><option></code></a> 要素がこの <code>select</code> 要素に含まれる数です。</p> </dd> <dt id="htmlselectelement.multiple"><a href="/ja/docs/Web/API/HTMLSelectElement/multiple"><code>HTMLSelectElement.multiple</code></a></dt> <dd> <p>論理値で、 HTML の <a href="/ja/docs/Web/HTML/Element/select#multiple"><code>multiple</code></a> 要素を反映し、複数の項目を選択することができるかどうかを示します。</p> </dd> <dt id="htmlselectelement.name"><a href="/ja/docs/Web/API/HTMLSelectElement/name"><code>HTMLSelectElement.name</code></a></dt> <dd> <p>文字列で、 HTML の <a href="/ja/docs/Web/HTML/Element/select#name"><code>name</code></a> 属性を反映し、サーバーおよび DOM 検索機能で使用されるこのコントロールの名前が入ります。</p> </dd> <dt id="htmlselectelement.options"><a href="/ja/docs/Web/API/HTMLSelectElement/options"><code>HTMLSelectElement.options</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p><a href="/ja/docs/Web/API/HTMLOptionsCollection"><code>HTMLOptionsCollection</code></a> で、この要素に含まれる一連の <a href="/ja/docs/Web/HTML/Element/option"><code><option></code></a> 要素 (<a href="/ja/docs/Web/API/HTMLOptionElement"><code>HTMLOptionElement</code></a>) を表します。</p> </dd> <dt id="htmlselectelement.required"><a href="/ja/docs/Web/API/HTMLSelectElement/required"><code>HTMLSelectElement.required</code></a></dt> <dd> <p>論理値で、 HTML の <a href="/ja/docs/Web/HTML/Element/select#required"><code>required</code></a> 属性を反映し、ユーザーがフォームを送信する前に値を選択する必要があることを示します。</p> </dd> <dt id="htmlselectelement.selectedindex"><a href="/ja/docs/Web/API/HTMLSelectElement/selectedIndex"><code>HTMLSelectElement.selectedIndex</code></a></dt> <dd> <p><code>long</code> で、最初に選択された <a href="/ja/docs/Web/HTML/Element/option"><code><option></code></a> 要素の序数を反映します。 <code>-1</code> の値は要素が選択されていないことを示します。</p> </dd> <dt id="htmlselectelement.selectedoptions"><a href="/ja/docs/Web/API/HTMLSelectElement/selectedOptions"><code>HTMLSelectElement.selectedOptions</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p><a href="/ja/docs/Web/API/HTMLCollection"><code>HTMLCollection</code></a> で、選択されているすべての <a href="/ja/docs/Web/HTML/Element/option"><code><option></code></a> 要素を反映します。</p> </dd> <dt id="htmlselectelement.size"><a href="/ja/docs/Web/API/HTMLSelectElement/size"><code>HTMLSelectElement.size</code></a></dt> <dd> <p><code>long</code> で、 HTML の <a href="/ja/docs/Web/HTML/Element/select#size"><code>size</code></a> 属性を反映し、コントロール内で見える項目の数が入ります。既定値は、 <code>multiple</code> が <code>true</code> でなければ 1 で、そうでなければ 4 です。</p> </dd> <dt id="htmlselectelement.type"><a href="/ja/docs/Web/API/HTMLSelectElement/type"><code>HTMLSelectElement.type</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p>文字列で、フォームコントロールの型を表します。 <code>multiple</code> が <code>true</code> である場合は <code>"select-multiple"</code> を返し、そうでなければ <code>"select-one"</code> を返します。</p> </dd> <dt id="htmlselectelement.validationmessage"><a href="/ja/docs/Web/API/HTMLSelectElement/validationMessage"><code>HTMLSelectElement.validationMessage</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p>文字列で、（もしあれば）制約検証でコントロールが合格しなかった場合のローカライズされたメッセージを表現します。この属性はコントロールが制約検証の対象にならない場合 (<code>willValidate</code> が <code>false</code> の場合) や、制約を満たしている場合は空文字列になります。</p> </dd> <dt id="htmlselectelement.validity"><a href="/ja/docs/Web/API/HTMLSelectElement/validity"><code>HTMLSelectElement.validity</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p><a href="/ja/docs/Web/API/ValidityState"><code>ValidityState</code></a> で、このボタンがある妥当性の状態を表します。</p> </dd> <dt id="htmlselectelement.value"><a href="/ja/docs/Web/API/HTMLSelectElement/value"><code>HTMLSelectElement.value</code></a></dt> <dd> <p>文字列で、このフォームコントロールの値を反映します。選択されている option 要素があれば最初のものの <code>value</code> プロパティを返し、そうでなければ空文字列を返します。</p> </dd> <dt id="htmlselectelement.willvalidate"><a href="/ja/docs/Web/API/HTMLSelectElement/willValidate"><code>HTMLSelectElement.willValidate</code></a> <span class="badge inline readonly" title="This value may not be changed.">読取専用</span></dt> <dd> <p>論理値で、ボタンが制約検証の候補になるかどうかを示します。制約検証が阻止される場合は <code>false</code> となります。</p> </dd> </dl></div></section><section aria-labelledby="メソッド"><h2 id="メソッド"><a href="#メソッド">メソッド</a></h2><div class="section-content"><p><em>このインターフェイスには <a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a>、<a href="/ja/docs/Web/API/Element"><code>Element</code></a>、<a href="/ja/docs/Web/API/Node"><code>Node</code></a> から継承したメソッドがあります。</em></p> <dl> <dt id="htmlselectelement.add"><a href="/ja/docs/Web/API/HTMLSelectElement/add"><code>HTMLSelectElement.add()</code></a></dt> <dd> <p>要素をこの <code>select</code> 要素にある <code>option</code> 要素の集合に加えます。</p> </dd> <dt id="htmlselectelement.checkvalidity"><a href="/ja/docs/Web/API/HTMLSelectElement/checkValidity"><code>HTMLSelectElement.checkValidity()</code></a></dt> <dd> <p>要素に何らかの制約があるか、それを満たしているかをチェックします。要素が制約に違反していた場合、ブラウザーはキャンセル可能な <a href="/ja/docs/Web/API/HTMLInputElement/invalid_event" title="invalid"><code>invalid</code></a> イベントを要素に送ります（そして <code>false</code> を返します）。</p> </dd> <dt id="htmlselectelement.item"><a href="/ja/docs/Web/API/HTMLSelectElement/item"><code>HTMLSelectElement.item()</code></a></dt> <dd> <p>この <a href="/ja/docs/Web/HTML/Element/select"><code><select></code></a> 要素の選択肢の集合から項目を取得します。角括弧または括弧で序数を指定することで、明示的にこのメソッドを呼び出さずに項目にアクセスすることもできます。</p> </dd> <dt id="htmlselectelement.nameditem"><a href="/ja/docs/Web/API/HTMLSelectElement/namedItem"><code>HTMLSelectElement.namedItem()</code></a></dt> <dd> <p>選択肢の集合から指定した名前で項目を取得します。名前の文字列は option ノードの <code>id</code> または <code>name</code> 属性と一致させることができます。角括弧または括弧で名前を指定することで、明示的にこのメソッドを呼び出さずに項目にアクセスすることもできます。</p> </dd> <dt id="htmlselectelement.remove"><a href="/ja/docs/Web/API/HTMLSelectElement/remove"><code>HTMLSelectElement.remove()</code></a></dt> <dd> <p>この <code>select</code> 要素の選択肢の集合から、指定された序数の要素を削除します。</p> </dd> <dt id="htmlselectelement.reportvalidity"><a href="/ja/docs/Web/API/HTMLSelectElement/reportValidity"><code>HTMLSelectElement.reportValidity()</code></a></dt> <dd> <p>このメソッドは、この要素の制約の問題があれば、ユーザーに報告します。問題があれば、キャンセル可能な <a href="/ja/docs/Web/API/HTMLInputElement/invalid_event" title="invalid"><code>invalid</code></a> イベントを要素で発生させ、 <code>false</code> を返します。問題がなければ、 <code>true</code> を返します。</p> </dd> <dt id="htmlselectelement.setcustomvalidity"><a href="/ja/docs/Web/API/HTMLSelectElement/setCustomValidity"><code>HTMLSelectElement.setCustomValidity()</code></a></dt> <dd> <p>選択要素の独自の検証メッセージを指定されたメッセージに設定します。空文字列を使用すると、要素に独自の検証エラーが<em>ない</em>ことを示します。</p> </dd> <dt id="showpicker"><a href="/ja/docs/Web/API/HTMLSelectElement/showPicker" title="showPicker()"><code>showPicker()</code></a></dt> <dd> <p>オプションピッカーを表示します。</p> </dd> </dl></div></section><section aria-labelledby="イベント"><h2 id="イベント"><a href="#イベント">イベント</a></h2><div class="section-content"><p><em>このインターフェイスには <a href="/ja/docs/Web/API/HTMLElement"><code>HTMLElement</code></a>、<a href="/ja/docs/Web/API/Element"><code>Element</code></a>、<a href="/ja/docs/Web/API/Node"><code>Node</code></a> から継承したイベントがあります。</em></p> <p>これらのイベントを待ち受けするには <a href="/ja/docs/Web/API/EventTarget/addEventListener" title="addEventListener()"><code>addEventListener()</code></a> を使用するか、イベントリスナーをこのインターフェイスの <code>onイベント名</code> プロパティに代入するかしてください。</p> <dl> <dt id="change"><a href="/ja/docs/Web/API/HTMLElement/change_event" title="change"><code>change</code></a> イベント</dt> <dd> <p>ユーザーが選択肢を選択したときに発行されます。</p> </dd> <dt id="input"><a href="/ja/docs/Web/API/Element/input_event" title="input"><code>input</code></a> イベント</dt> <dd> <p><a href="/ja/docs/Web/HTML/Element/input"><code><input></code></a>, <a href="/ja/docs/Web/HTML/Element/select"><code><select></code></a>, <a href="/ja/docs/Web/HTML/Element/textarea"><code><textarea></code></a> の各要素の <code>value</code> が変化したときに発行されます。</p> </dd> </dl></div></section><section aria-labelledby="例"><h2 id="例"><a href="#例">例</a></h2><div class="section-content"></div></section><section aria-labelledby="選択された選択肢についての情報を得る"><h3 id="選択された選択肢についての情報を得る"><a href="#選択された選択肢についての情報を得る">選択された選択肢についての情報を得る</a></h3><div class="section-content"><div class="code-example"><div class="example-header"><span class="language-name">js</span></div><pre class="brush: js notranslate"><code>/* 以下の HTML があると仮定します <select id='s'> <option>First</option> <option selected>Second</option> <option>Third</option> </select> */ const select = document.getElementById("s"); // 選択された選択肢の序数を返す console.log(select.selectedIndex); // 1 // 選択された選択肢の値を返す console.log(select.options[select.selectedIndex].value); // Second </code></pre></div> <p>ユーザーの選択の変更を追跡するのであれば、 <a href="/ja/docs/Web/API/HTMLElement/change_event" title="change"><code>change</code></a> イベントが <code><select></code> に発生するのを監視するほうがより良い方法です。これは値が変化したときに通知され、必要なものを更新することができます。詳しくは、 <code>change</code> イベントのドキュメントで<a href="/ja/docs/Web/API/HTMLElement/change_event#select_element">提供されている例</a>を参照してください。</p></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/form-elements.html#htmlselectelement">HTML <br/><small># htmlselectelement</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. Enable JavaScript to view data.</noscript></p><section aria-labelledby="関連情報"><h2 id="関連情報"><a href="#関連情報">関連情報</a></h2><div class="section-content"><ul> <li>このインターフェイスを実装している HTML 要素: <a href="/ja/docs/Web/HTML/Element/select"><code><select></code></a></li> </ul></div></section></article><aside class="article-footer"><div class="article-footer-inner"><div class="svg-container"><svg xmlns="http://www.w3.org/2000/svg" width="162" height="162" viewBox="0 0 162 162" fill="none" role="none"><mask id="b" fill="#fff"><path d="M97.203 47.04c8.113-7.886 18.004-13.871 28.906-17.492a78 78 0 0 1 33.969-3.39c11.443 1.39 22.401 5.295 32.024 11.411s17.656 14.28 23.476 23.86c5.819 9.579 9.269 20.318 10.083 31.385a69.85 69.85 0 0 1-5.387 32.44c-4.358 10.272-11.115 19.443-19.747 26.801-8.632 7.359-18.908 12.709-30.034 15.637l-6.17-21.698c7.666-2.017 14.746-5.703 20.694-10.773 5.948-5.071 10.603-11.389 13.606-18.467a48.14 48.14 0 0 0 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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/API/HTMLSelectElement","doc":{"body":[{"type":"prose","value":{"id":null,"title":null,"isH3":false,"content":"<p><strong><code>HTMLSelectElement</code></strong> インターフェイスは HTML の <a href=\"/ja/docs/Web/HTML/Element/select\"><code><select></code></a> 要素を表します。これらの要素は <a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a> インターフェイスを通じて他の HTML 要素のすべてのプロパティとメソッドも共有します。</p>\n<svg viewBox=\"-1 -1 650 42\" preserveAspectRatio=\"xMinYMin meet\"><a style=\"text-decoration: none;\" href=\"/ja/docs/Web/API/EventTarget\">\n <rect x=\"0\" y=\"0\" width=\"88\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"44\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n EventTarget\n </text>\n </a><line x1=\"88\" y1=\"14\" x2=\"118\" y2=\"14\" stroke=\"#D4DDE4\"></line><polyline points=\"88,14 98,9 98,19 88,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline><a style=\"text-decoration: none;\" href=\"/ja/docs/Web/API/Node\">\n <rect x=\"118\" y=\"0\" width=\"75\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"155.5\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n Node\n </text>\n </a><line x1=\"193\" y1=\"14\" x2=\"223\" y2=\"14\" stroke=\"#D4DDE4\"></line><polyline points=\"193,14 203,9 203,19 193,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline><a style=\"text-decoration: none;\" href=\"/ja/docs/Web/API/Element\">\n <rect x=\"223\" y=\"0\" width=\"75\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"260.5\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n Element\n </text>\n </a><line x1=\"298\" y1=\"14\" x2=\"328\" y2=\"14\" stroke=\"#D4DDE4\"></line><polyline points=\"298,14 308,9 308,19 298,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline><a style=\"text-decoration: none;\" href=\"/ja/docs/Web/API/HTMLElement\">\n <rect x=\"328\" y=\"0\" width=\"88\" height=\"25\" fill=\"#fff\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"372\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n HTMLElement\n </text>\n </a><line x1=\"416\" y1=\"14\" x2=\"446\" y2=\"14\" stroke=\"#D4DDE4\"></line><polyline points=\"416,14 426,9 426,19 416,14\" stroke=\"#D4DDE4\" fill=\"#fff\"></polyline><a style=\"text-decoration: none;\" href=\"/ja/docs/Web/API/HTMLSelectElement\" aria-current=\"page\">\n <rect x=\"446\" y=\"0\" width=\"136\" height=\"25\" fill=\"#F4F7F8\" stroke=\"#D4DDE4\" stroke-width=\"2px\"></rect>\n <text x=\"514\" y=\"16\" font-size=\"10px\" fill=\"#4D4E53\" text-anchor=\"middle\">\n HTMLSelectElement\n </text>\n </a></svg>"}},{"type":"prose","value":{"id":"プロパティ","title":"プロパティ","isH3":false,"content":"<p><em>このインターフェイスには <a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a>、<a href=\"/ja/docs/Web/API/Element\"><code>Element</code></a>、<a href=\"/ja/docs/Web/API/Node\"><code>Node</code></a> から継承したプロパティがあります。</em></p>\n<dl>\n<dt id=\"htmlselectelement.disabled\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/disabled\"><code>HTMLSelectElement.disabled</code></a></dt>\n<dd>\n<p>論理値で、 HTML の <a href=\"/ja/docs/Web/HTML/Element/select#disabled\"><code>disabled</code></a> 属性を反映し、コントロールが無効か否か、つまりクリックを受け付けるかどうかを示します。</p>\n</dd>\n<dt id=\"htmlselectelement.form\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/form\"><code>HTMLSelectElement.form</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p><a href=\"/ja/docs/Web/API/HTMLFormElement\"><code>HTMLFormElement</code></a> で、この要素が関連付けられているフォームを反映します。この要素が <a href=\"/ja/docs/Web/HTML/Element/form\"><code><form></code></a> 要素に関連付けられていなければ、 <code>null</code> を返します。</p>\n</dd>\n<dt id=\"htmlselectelement.labels\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/labels\"><code>HTMLSelectElement.labels</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p><a href=\"/ja/docs/Web/API/NodeList\"><code>NodeList</code></a> で、この要素に関連付けられた <a href=\"/ja/docs/Web/HTML/Element/label\"><code><label></code></a> 要素を表します。</p>\n</dd>\n<dt id=\"htmlselectelement.length\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/length\"><code>HTMLSelectElement.length</code></a></dt>\n<dd>\n<p><code>unsigned long</code> で、 <a href=\"/ja/docs/Web/HTML/Element/option\"><code><option></code></a> 要素がこの <code>select</code> 要素に含まれる数です。</p>\n</dd>\n<dt id=\"htmlselectelement.multiple\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/multiple\"><code>HTMLSelectElement.multiple</code></a></dt>\n<dd>\n<p>論理値で、 HTML の <a href=\"/ja/docs/Web/HTML/Element/select#multiple\"><code>multiple</code></a> 要素を反映し、複数の項目を選択することができるかどうかを示します。</p>\n</dd>\n<dt id=\"htmlselectelement.name\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/name\"><code>HTMLSelectElement.name</code></a></dt>\n<dd>\n<p>文字列で、 HTML の <a href=\"/ja/docs/Web/HTML/Element/select#name\"><code>name</code></a> 属性を反映し、サーバーおよび DOM 検索機能で使用されるこのコントロールの名前が入ります。</p>\n</dd>\n<dt id=\"htmlselectelement.options\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/options\"><code>HTMLSelectElement.options</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p><a href=\"/ja/docs/Web/API/HTMLOptionsCollection\"><code>HTMLOptionsCollection</code></a> で、この要素に含まれる一連の <a href=\"/ja/docs/Web/HTML/Element/option\"><code><option></code></a> 要素 (<a href=\"/ja/docs/Web/API/HTMLOptionElement\"><code>HTMLOptionElement</code></a>) を表します。</p>\n</dd>\n<dt id=\"htmlselectelement.required\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/required\"><code>HTMLSelectElement.required</code></a></dt>\n<dd>\n<p>論理値で、 HTML の <a href=\"/ja/docs/Web/HTML/Element/select#required\"><code>required</code></a> 属性を反映し、ユーザーがフォームを送信する前に値を選択する必要があることを示します。</p>\n</dd>\n<dt id=\"htmlselectelement.selectedindex\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/selectedIndex\"><code>HTMLSelectElement.selectedIndex</code></a></dt>\n<dd>\n<p><code>long</code> で、最初に選択された <a href=\"/ja/docs/Web/HTML/Element/option\"><code><option></code></a> 要素の序数を反映します。 <code>-1</code> の値は要素が選択されていないことを示します。</p>\n</dd>\n<dt id=\"htmlselectelement.selectedoptions\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/selectedOptions\"><code>HTMLSelectElement.selectedOptions</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p><a href=\"/ja/docs/Web/API/HTMLCollection\"><code>HTMLCollection</code></a> で、選択されているすべての <a href=\"/ja/docs/Web/HTML/Element/option\"><code><option></code></a> 要素を反映します。</p>\n</dd>\n<dt id=\"htmlselectelement.size\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/size\"><code>HTMLSelectElement.size</code></a></dt>\n<dd>\n<p><code>long</code> で、 HTML の <a href=\"/ja/docs/Web/HTML/Element/select#size\"><code>size</code></a> 属性を反映し、コントロール内で見える項目の数が入ります。既定値は、 <code>multiple</code> が <code>true</code> でなければ 1 で、そうでなければ 4 です。</p>\n</dd>\n<dt id=\"htmlselectelement.type\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/type\"><code>HTMLSelectElement.type</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p>文字列で、フォームコントロールの型を表します。 <code>multiple</code> が <code>true</code> である場合は <code>\"select-multiple\"</code> を返し、そうでなければ <code>\"select-one\"</code> を返します。</p>\n</dd>\n<dt id=\"htmlselectelement.validationmessage\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/validationMessage\"><code>HTMLSelectElement.validationMessage</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p>文字列で、（もしあれば）制約検証でコントロールが合格しなかった場合のローカライズされたメッセージを表現します。この属性はコントロールが制約検証の対象にならない場合 (<code>willValidate</code> が <code>false</code> の場合) や、制約を満たしている場合は空文字列になります。</p>\n</dd>\n<dt id=\"htmlselectelement.validity\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/validity\"><code>HTMLSelectElement.validity</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p><a href=\"/ja/docs/Web/API/ValidityState\"><code>ValidityState</code></a> で、このボタンがある妥当性の状態を表します。</p>\n</dd>\n<dt id=\"htmlselectelement.value\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/value\"><code>HTMLSelectElement.value</code></a></dt>\n<dd>\n<p>文字列で、このフォームコントロールの値を反映します。選択されている option 要素があれば最初のものの <code>value</code> プロパティを返し、そうでなければ空文字列を返します。</p>\n</dd>\n<dt id=\"htmlselectelement.willvalidate\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/willValidate\"><code>HTMLSelectElement.willValidate</code></a> <span class=\"badge inline readonly\" title=\"This value may not be changed.\">読取専用</span></dt>\n<dd>\n<p>論理値で、ボタンが制約検証の候補になるかどうかを示します。制約検証が阻止される場合は <code>false</code> となります。</p>\n</dd>\n</dl>"}},{"type":"prose","value":{"id":"メソッド","title":"メソッド","isH3":false,"content":"<p><em>このインターフェイスには <a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a>、<a href=\"/ja/docs/Web/API/Element\"><code>Element</code></a>、<a href=\"/ja/docs/Web/API/Node\"><code>Node</code></a> から継承したメソッドがあります。</em></p>\n<dl>\n<dt id=\"htmlselectelement.add\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/add\"><code>HTMLSelectElement.add()</code></a></dt>\n<dd>\n<p>要素をこの <code>select</code> 要素にある <code>option</code> 要素の集合に加えます。</p>\n</dd>\n<dt id=\"htmlselectelement.checkvalidity\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/checkValidity\"><code>HTMLSelectElement.checkValidity()</code></a></dt>\n<dd>\n<p>要素に何らかの制約があるか、それを満たしているかをチェックします。要素が制約に違反していた場合、ブラウザーはキャンセル可能な <a href=\"/ja/docs/Web/API/HTMLInputElement/invalid_event\" title=\"invalid\"><code>invalid</code></a> イベントを要素に送ります（そして <code>false</code> を返します）。</p>\n</dd>\n<dt id=\"htmlselectelement.item\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/item\"><code>HTMLSelectElement.item()</code></a></dt>\n<dd>\n<p>この <a href=\"/ja/docs/Web/HTML/Element/select\"><code><select></code></a> 要素の選択肢の集合から項目を取得します。角括弧または括弧で序数を指定することで、明示的にこのメソッドを呼び出さずに項目にアクセスすることもできます。</p>\n</dd>\n<dt id=\"htmlselectelement.nameditem\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/namedItem\"><code>HTMLSelectElement.namedItem()</code></a></dt>\n<dd>\n<p>選択肢の集合から指定した名前で項目を取得します。名前の文字列は option ノードの <code>id</code> または <code>name</code> 属性と一致させることができます。角括弧または括弧で名前を指定することで、明示的にこのメソッドを呼び出さずに項目にアクセスすることもできます。</p>\n</dd>\n<dt id=\"htmlselectelement.remove\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/remove\"><code>HTMLSelectElement.remove()</code></a></dt>\n<dd>\n<p>この <code>select</code> 要素の選択肢の集合から、指定された序数の要素を削除します。</p>\n</dd>\n<dt id=\"htmlselectelement.reportvalidity\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/reportValidity\"><code>HTMLSelectElement.reportValidity()</code></a></dt>\n<dd>\n<p>このメソッドは、この要素の制約の問題があれば、ユーザーに報告します。問題があれば、キャンセル可能な <a href=\"/ja/docs/Web/API/HTMLInputElement/invalid_event\" title=\"invalid\"><code>invalid</code></a> イベントを要素で発生させ、 <code>false</code> を返します。問題がなければ、 <code>true</code> を返します。</p>\n</dd>\n<dt id=\"htmlselectelement.setcustomvalidity\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/setCustomValidity\"><code>HTMLSelectElement.setCustomValidity()</code></a></dt>\n<dd>\n<p>選択要素の独自の検証メッセージを指定されたメッセージに設定します。空文字列を使用すると、要素に独自の検証エラーが<em>ない</em>ことを示します。</p>\n</dd>\n<dt id=\"showpicker\"><a href=\"/ja/docs/Web/API/HTMLSelectElement/showPicker\" title=\"showPicker()\"><code>showPicker()</code></a></dt>\n<dd>\n<p>オプションピッカーを表示します。</p>\n</dd>\n</dl>"}},{"type":"prose","value":{"id":"イベント","title":"イベント","isH3":false,"content":"<p><em>このインターフェイスには <a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a>、<a href=\"/ja/docs/Web/API/Element\"><code>Element</code></a>、<a href=\"/ja/docs/Web/API/Node\"><code>Node</code></a> から継承したイベントがあります。</em></p>\n<p>これらのイベントを待ち受けするには <a href=\"/ja/docs/Web/API/EventTarget/addEventListener\" title=\"addEventListener()\"><code>addEventListener()</code></a> を使用するか、イベントリスナーをこのインターフェイスの <code>onイベント名</code> プロパティに代入するかしてください。</p>\n<dl>\n<dt id=\"change\"><a href=\"/ja/docs/Web/API/HTMLElement/change_event\" title=\"change\"><code>change</code></a> イベント</dt>\n<dd>\n<p>ユーザーが選択肢を選択したときに発行されます。</p>\n</dd>\n<dt id=\"input\"><a href=\"/ja/docs/Web/API/Element/input_event\" title=\"input\"><code>input</code></a> イベント</dt>\n<dd>\n<p><a href=\"/ja/docs/Web/HTML/Element/input\"><code><input></code></a>, <a href=\"/ja/docs/Web/HTML/Element/select\"><code><select></code></a>, <a href=\"/ja/docs/Web/HTML/Element/textarea\"><code><textarea></code></a> の各要素の <code>value</code> が変化したときに発行されます。</p>\n</dd>\n</dl>"}},{"type":"prose","value":{"id":"例","title":"例","isH3":false,"content":""}},{"type":"prose","value":{"id":"選択された選択肢についての情報を得る","title":"選択された選択肢についての情報を得る","isH3":true,"content":"<div class=\"code-example\"><div class=\"example-header\"><span class=\"language-name\">js</span></div><pre class=\"brush: js notranslate\"><code>/* 以下の HTML があると仮定します\n<select id='s'>\n <option>First</option>\n <option selected>Second</option>\n <option>Third</option>\n</select>\n*/\n\nconst select = document.getElementById(\"s\");\n\n// 選択された選択肢の序数を返す\nconsole.log(select.selectedIndex); // 1\n\n// 選択された選択肢の値を返す\nconsole.log(select.options[select.selectedIndex].value); // Second\n</code></pre></div>\n<p>ユーザーの選択の変更を追跡するのであれば、 <a href=\"/ja/docs/Web/API/HTMLElement/change_event\" title=\"change\"><code>change</code></a> イベントが <code><select></code> に発生するのを監視するほうがより良い方法です。これは値が変化したときに通知され、必要なものを更新することができます。詳しくは、 <code>change</code> イベントのドキュメントで<a href=\"/ja/docs/Web/API/HTMLElement/change_event#select_element\">提供されている例</a>を参照してください。</p>"}},{"type":"specifications","value":{"id":"仕様書","title":"仕様書","isH3":false,"specifications":[{"bcdSpecificationURL":"https://html.spec.whatwg.org/multipage/form-elements.html#htmlselectelement","title":"HTML"}],"query":"api.HTMLSelectElement"}},{"type":"browser_compatibility","value":{"id":"ブラウザーの互換性","title":"ブラウザーの互換性","isH3":false,"query":"api.HTMLSelectElement"}},{"type":"prose","value":{"id":"関連情報","title":"関連情報","isH3":false,"content":"<ul>\n<li>このインターフェイスを実装している HTML 要素: <a href=\"/ja/docs/Web/HTML/Element/select\"><code><select></code></a></li>\n</ul>"}}],"isActive":true,"isMarkdown":true,"isTranslated":true,"locale":"ja","mdn_url":"/ja/docs/Web/API/HTMLSelectElement","modified":"2024-10-19T08:52:24.000Z","native":"日本語","noIndexing":false,"other_translations":[{"locale":"en-US","title":"HTMLSelectElement","native":"English (US)"},{"locale":"de","title":"HTMLSelectElement","native":"Deutsch"},{"locale":"es","title":"HTMLSelectElement","native":"Español"},{"locale":"fr","title":"HTMLSelectElement","native":"Français"}],"pageTitle":"HTMLSelectElement - Web API | MDN","parents":[{"uri":"/ja/docs/Web","title":"開発者向けのウェブ技術"},{"uri":"/ja/docs/Web/API","title":"Web API"},{"uri":"/ja/docs/Web/API/HTMLSelectElement","title":"HTMLSelectElement"}],"popularity":null,"short_title":"HTMLSelectElement","sidebarHTML":"<ol><li class=\"section\"><a href=\"/ja/docs/Web/API/HTML_DOM_API\">HTML DOM API</a></li><li class=\"section\"><em><a href=\"/ja/docs/Web/API/HTMLSelectElement\" aria-current=\"page\"><code>HTMLSelectElement</code></a></em></li><li class=\"toggle\"><details open=\"\"><summary>インスタンスプロパティ</summary><ol><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/autocomplete\"><code>autocomplete</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/disabled\"><code>disabled</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/form\"><code>form</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/labels\"><code>labels</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/length\"><code>length</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/multiple\"><code>multiple</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/name\"><code>name</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/options\"><code>options</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/required\"><code>required</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/selectedIndex\"><code>selectedIndex</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/selectedOptions\"><code>selectedOptions</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/size\"><code>size</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/type\"><code>type</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/validationMessage\"><code>validationMessage</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/validity\"><code>validity</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/value\"><code>value</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/willValidate\"><code>willValidate</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>インスタンスメソッド</summary><ol><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/add\"><code>add()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/checkValidity\"><code>checkValidity()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/item\"><code>item()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/namedItem\"><code>namedItem()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/remove\"><code>remove()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/reportValidity\"><code>reportValidity()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/setCustomValidity\"><code>setCustomValidity()</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSelectElement/showPicker\"><code>showPicker()</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>継承</summary><ol><li><a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></li><li><a href=\"/ja/docs/Web/API/Element\"><code>Element</code></a></li><li><a href=\"/ja/docs/Web/API/Node\"><code>Node</code></a></li><li><a href=\"/ja/docs/Web/API/EventTarget\"><code>EventTarget</code></a></li></ol></details></li><li class=\"toggle\"><details open=\"\"><summary>HTML DOM に関連するページ</summary><ol><li><a href=\"/ja/docs/Web/API/BeforeUnloadEvent\"><code>BeforeUnloadEvent</code></a></li><li><a href=\"/ja/docs/Web/API/DOMStringMap\"><code>DOMStringMap</code></a></li><li><a href=\"/ja/docs/Web/API/ErrorEvent\"><code>ErrorEvent</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLAnchorElement\"><code>HTMLAnchorElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLAreaElement\"><code>HTMLAreaElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLAudioElement\"><code>HTMLAudioElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLBRElement\"><code>HTMLBRElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLBaseElement\"><code>HTMLBaseElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLBodyElement\"><code>HTMLBodyElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLButtonElement\"><code>HTMLButtonElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLCanvasElement\"><code>HTMLCanvasElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDListElement\"><code>HTMLDListElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDataElement\"><code>HTMLDataElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDataListElement\"><code>HTMLDataListElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDialogElement\"><code>HTMLDialogElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDivElement\"><code>HTMLDivElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLDocument\"><code>HTMLDocument</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLElement\"><code>HTMLElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLEmbedElement\"><code>HTMLEmbedElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLFieldSetElement\"><code>HTMLFieldSetElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLFormControlsCollection\"><code>HTMLFormControlsCollection</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLFormElement\"><code>HTMLFormElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLFrameSetElement\"><code>HTMLFrameSetElement</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/API/HTMLHRElement\"><code>HTMLHRElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLHeadElement\"><code>HTMLHeadElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLHeadingElement\"><code>HTMLHeadingElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLHtmlElement\"><code>HTMLHtmlElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLIFrameElement\"><code>HTMLIFrameElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLImageElement\"><code>HTMLImageElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLInputElement\"><code>HTMLInputElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLLIElement\"><code>HTMLLIElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLLabelElement\"><code>HTMLLabelElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLLegendElement\"><code>HTMLLegendElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLLinkElement\"><code>HTMLLinkElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLMapElement\"><code>HTMLMapElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLMediaElement\"><code>HTMLMediaElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLMenuElement\"><code>HTMLMenuElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLMetaElement\"><code>HTMLMetaElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLMeterElement\"><code>HTMLMeterElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLModElement\"><code>HTMLModElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLOListElement\"><code>HTMLOListElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLObjectElement\"><code>HTMLObjectElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLOptGroupElement\"><code>HTMLOptGroupElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLOptionElement\"><code>HTMLOptionElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLOptionsCollection\"><code>HTMLOptionsCollection</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLOutputElement\"><code>HTMLOutputElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLParagraphElement\"><code>HTMLParagraphElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLPictureElement\"><code>HTMLPictureElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLPreElement\"><code>HTMLPreElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLProgressElement\"><code>HTMLProgressElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLQuoteElement\"><code>HTMLQuoteElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLScriptElement\"><code>HTMLScriptElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSourceElement\"><code>HTMLSourceElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLSpanElement\"><code>HTMLSpanElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLStyleElement\"><code>HTMLStyleElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableCaptionElement\"><code>HTMLTableCaptionElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableCellElement\"><code>HTMLTableCellElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableColElement\"><code>HTMLTableColElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableElement\"><code>HTMLTableElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableRowElement\"><code>HTMLTableRowElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTableSectionElement\"><code>HTMLTableSectionElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTemplateElement\"><code>HTMLTemplateElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTextAreaElement\"><code>HTMLTextAreaElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTimeElement\"><code>HTMLTimeElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTitleElement\"><code>HTMLTitleElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLTrackElement\"><code>HTMLTrackElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLUListElement\"><code>HTMLUListElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLUnknownElement\"><code>HTMLUnknownElement</code></a></li><li><a href=\"/ja/docs/Web/API/HTMLVideoElement\"><code>HTMLVideoElement</code></a></li><li><a href=\"/ja/docs/Web/API/HashChangeEvent\"><code>HashChangeEvent</code></a></li><li><a href=\"/ja/docs/Web/API/History\"><code>History</code></a></li><li><a href=\"/ja/docs/Web/API/ImageData\"><code>ImageData</code></a></li><li><a href=\"/ja/docs/Web/API/Location\"><code>Location</code></a></li><li><a href=\"/ja/docs/Web/API/MessageChannel\"><code>MessageChannel</code></a></li><li><a href=\"/ja/docs/Web/API/MessageEvent\"><code>MessageEvent</code></a></li><li><a href=\"/ja/docs/Web/API/MessagePort\"><code>MessagePort</code></a></li><li><a href=\"/ja/docs/Web/API/Navigator\"><code>Navigator</code></a></li><li><a href=\"/ja/docs/Web/API/PageRevealEvent\"><code>PageRevealEvent</code></a></li><li><a href=\"/ja/docs/Web/API/PageSwapEvent\"><code>PageSwapEvent</code></a></li><li><a href=\"/ja/docs/Web/API/PageTransitionEvent\"><code>PageTransitionEvent</code></a></li><li><a href=\"/ja/docs/Web/API/Plugin\"><code>Plugin</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/API/PluginArray\"><code>PluginArray</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/API/PromiseRejectionEvent\"><code>PromiseRejectionEvent</code></a></li><li><a href=\"/ja/docs/Web/API/RadioNodeList\"><code>RadioNodeList</code></a></li><li><a href=\"/ja/docs/Web/API/UserActivation\"><code>UserActivation</code></a></li><li><a href=\"/ja/docs/Web/API/ValidityState\"><code>ValidityState</code></a></li><li><a href=\"/ja/docs/Web/API/Window\"><code>Window</code></a></li><li><a href=\"/ja/docs/Web/API/WorkletGlobalScope\"><code>WorkletGlobalScope</code></a></li></ol></details></li></ol>","source":{"folder":"ja/web/api/htmlselectelement","github_url":"https://github.com/mdn/translated-content/blob/main/files/ja/web/api/htmlselectelement/index.md","last_commit_url":"https://github.com/mdn/translated-content/commit/b68a34789ee9129b2bb3d530a6619783e1fe5ebe","filename":"index.md"},"summary":"HTMLSelectElement インターフェイスは HTML の <select> 要素を表します。これらの要素は HTMLElement インターフェイスを通じて他の HTML 要素のすべてのプロパティとメソッドも共有します。","title":"HTMLSelectElement","toc":[{"text":"プロパティ","id":"プロパティ"},{"text":"メソッド","id":"メソッド"},{"text":"イベント","id":"イベント"},{"text":"例","id":"例"},{"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"}],"baseline":{"baseline":"high","baseline_low_date":"2015-07-29","baseline_high_date":"2018-01-29","support":{"chrome":"1","chrome_android":"18","edge":"12","firefox":"1","firefox_android":"4","safari":"1","safari_ios":"1"},"asterisk":true},"browserCompat":["api.HTMLSelectElement"],"pageType":"web-api-interface"}}</script></body></html>