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+---
+title: menus.onClicked
+slug: Mozilla/Add-ons/WebExtensions/API/menus/onClicked
+translation_of: Mozilla/Add-ons/WebExtensions/API/menus/onClicked
+---
+<div>{{AddonSidebar()}}</div>
+
+<p>メニューアイテムがクリックされたときに発火します。</p>
+
+<p>他のブラウザとの互換性のためにFirefoxはこのイベントを名前空間<code>contextMenus</code>と<code>menu</code>を経由して利用可能にしています。</p>
+
+<h2 id="書式">書式</h2>
+
+<pre class="syntaxbox brush:js">browser.menus.onClicked.addListener(listener)
+browser.menus.onClicked.removeListener(listener)
+browser.menus.onClicked.hasListener(listener)
+</pre>
+
+<p>イベントは3つの関数を持ちます:</p>
+
+<dl>
+ <dt><code>addListener(callback)</code></dt>
+ <dd>このイベントのリスナーを追加します。</dd>
+ <dt><code>removeListener(listener)</code></dt>
+ <dd>リスニングを停止します。引数<code>listener</code>は削除するリスナーです。</dd>
+ <dt><code>hasListener(listener)</code></dt>
+ <dd><code>listener</code>が登録されているかどうかを調べます。<code>true</code>が返ればリスニング中、そうでなければ<code>false</code>が返ります。</dd>
+</dl>
+
+<h2 id="addListenerの書式">addListenerの書式</h2>
+
+<h3 id="パラメータ">パラメータ</h3>
+
+<dl>
+ <dt><code>callback</code></dt>
+ <dd>
+ <p>イベントが起こったときに呼ばれる関数です。以下の引数を渡されます:</p>
+
+ <dl class="reference-values">
+  <dt><code>info</code></dt>
+  <dd>{{WebExtAPIRef('menus.OnClickData')}}. Information about the item clicked and the context where the click happened.</dd>
+ </dl>
+
+ <dl class="reference-values">
+  <dt><code>tab</code></dt>
+  <dd>{{WebExtAPIRef('tabs.Tab')}}. The details of the tab where the click took place. If the click did not take place in or on a tab, this parameter will be missing.</dd>
+ </dl>
+ </dd>
+</dl>
+
+<h2 id="ブラウザ互換性">ブラウザ互換性</h2>
+
+<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
+
+<p>{{Compat("webextensions.api.menus.onClicked", 10)}}</p>
+
+<h2 id="例">例</h2>
+
+<p>この例はメニューアイテムのクリックをリッスンし、アイテムのIDとタブのIDをログします:</p>
+
+<pre class="brush: js">browser.menus.create({
+  id: "click-me",
+  title: "Click me!",
+  contexts: ["all"]
+});
+
+browser.menus.onClicked.addListener((info, tab) =&gt; {
+  console.log("Item " + info.menuItemId + " clicked " +
+              "in tab " + tab.id);
+});</pre>
+
+<p>{{WebExtExamples}}</p>
+
+<div class="note"><strong>Acknowledgements</strong>
+
+<p>This API is based on Chromium's <a href="https://developer.chrome.com/extensions/contextMenus#event-onClicked"><code>chrome.contextMenus</code></a> API. This documentation is derived from <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/context_menus.json"><code>context_menus.json</code></a> in the Chromium code.</p>
+</div>
+
+<div class="hidden">
+<pre>// Copyright 2015 The Chromium Authors. All rights reserved.
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+//    * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+//    * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following disclaimer
+// in the documentation and/or other materials provided with the
+// distribution.
+//    * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived from
+// this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+</pre>
+</div>