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author | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
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committer | Peter Bengtsson <mail@peterbe.com> | 2020-12-08 14:40:17 -0500 |
commit | 33058f2b292b3a581333bdfb21b8f671898c5060 (patch) | |
tree | 51c3e392513ec574331b2d3f85c394445ea803c6 /files/ja/web/api/document/querycommandstate/index.html | |
parent | 8b66d724f7caf0157093fb09cfec8fbd0c6ad50a (diff) | |
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diff --git a/files/ja/web/api/document/querycommandstate/index.html b/files/ja/web/api/document/querycommandstate/index.html new file mode 100644 index 0000000000..daaa234747 --- /dev/null +++ b/files/ja/web/api/document/querycommandstate/index.html @@ -0,0 +1,89 @@ +--- +title: Document.queryCommandState() +slug: Web/API/Document/queryCommandState +tags: + - API + - DOM + - Reference +translation_of: Web/API/Document/queryCommandState +--- +<div>{{ApiRef("DOM")}}{{obsolete_header}}</div> + +<p><strong><code>queryCommandState()</code></strong> メソッドは、現在の選択範囲に特定の {{domxref("Document.execCommand()")}} コマンドが適用されているかどうかを知らせます。</p> + +<h2 id="Syntax" name="Syntax">構文</h2> + +<pre class="brush: js notranslate">queryCommandState(String <var>command</var>) +</pre> + +<h3 id="Parameters" name="Parameters">引数</h3> + +<p><code><var>command</var></code> は {{domxref("Document.execCommand()")}} のコマンドです。</p> + +<h3 id="Return_value" name="Return_value">返値</h3> + +<p><code>queryCommandState()</code> は {{jsxref("Boolean")}} 値、または状態が不明な場合は <code>null</code> を返す可能性があります。</p> + +<h2 id="Example" name="Example">例</h2> + +<h3 id="HTML">HTML</h3> + +<pre class="brush: html notranslate"><div contenteditable="true">Select a part of this text!</div> +<button onclick="makeBold();">Test the state of the 'bold' command</button> +</pre> + +<h3 id="JavaScript">JavaScript</h3> + +<pre class="brush: js notranslate">function makeBold() { + var state = document.queryCommandState("bold"); + switch (state) { + case true: + alert("The bold formatting will be removed from the selected text."); + break; + case false: + alert("The selected text will be displayed in bold."); + break; + case null: + alert("The state of the 'bold' command is indeterminable."); + break; + } + document.execCommand('bold'); +}</pre> + +<h3 id="Result" name="Result">結果</h3> + +<p>{{EmbedLiveSample('Example')}}</p> + +<h2 id="Specifications" name="Specifications">仕様書</h2> + +<table class="standard-table"> + <thead> + <tr> + <th scope="col">仕様書</th> + <th scope="col">状態</th> + <th scope="col">備考</th> + </tr> + </thead> + <tbody> + <tr> + <td><a href="https://w3c.github.io/editing/execCommand.html#querycommandstate()">execCommand</a></td> + <td></td> + <td></td> + </tr> + </tbody> +</table> + +<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの互換性</h2> + +<div class="hidden">このページの互換性一覧表は構造化データから生成されています。データに協力していただけるのであれば、 <a class="external" href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> をチェックアウトしてプルリクエストを送信してください。</div> + +<p>{{Compat("api.Document.queryCommandState")}}</p> + +<h2 id="See_also" name="See_also">関連情報</h2> + +<ul> + <li>{{domxref("HTMLElement.contentEditable")}}</li> + <li>{{domxref("document.designMode")}}</li> + <li><a href="/ja/docs/Rich-Text_Editing_in_Mozilla">Mozilla のリッチテキスト編集</a></li> + <li><code>queryCommandState()</code> に関するブラウザーのバグ: <a href="https://github.com/guardian/scribe/blob/master/BROWSERINCONSISTENCIES.md#documentquerycommandstate">Scribe's "Browser Inconsistencies" documentation</a></li> +</ul> |