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diff --git a/files/ja/mozilla/add-ons/webextensions/api/devtools/inspectedwindow/tabid/index.html b/files/ja/mozilla/add-ons/webextensions/api/devtools/inspectedwindow/tabid/index.html
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+---
+title: devtools.inspectedWindow.tabId
+slug: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow/tabId
+translation_of: Mozilla/Add-ons/WebExtensions/API/devtools.inspectedWindow/tabId
+---
+<div>{{AddonSidebar()}}</div>
+
+<p>devtools のこのインスタンスがアタッチされる {{WebExtAPIRef("tabs.Tab", "tab")}} の ID。番号で表されます。</p>
+
+<p>これは拡張機能のバックグラウンドページに送信できるため、バックグラウンドページは {{WebExtAPIRef("tabs")}} API を使用してタブと対話できます:</p>
+
+<pre class="brush: js">// devtools-panel.js
+
+const scriptToAttach = "document.body.innerHTML = 'Hi from the devtools';";
+
+attachContentScriptButton.addEventListener("click", () =&gt; {
+  browser.runtime.sendMessage({
+    tabId: browser.devtools.inspectedWindow.tabId,
+    script: scriptToAttach
+  });
+});</pre>
+
+<pre class="brush: js">// background.js
+
+function handleMessage(request, sender, sendResponse) {
+  browser.tabs.executeScript(request.tabId, {
+    code: request.script
+  });
+}
+
+browser.runtime.onMessage.addListener(handleMessage);</pre>
+
+<h2 id="ブラウザの対応状況">ブラウザの対応状況</h2>
+
+<p>{{Compat("webextensions.api.devtools.inspectedWindow.tabId")}}</p>
+
+<p class="hidden">このページの互換性テーブルは構造化データから生成されます。データに貢献したい場合は、<a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> をチェックして、プルリクエストを送信してください。</p>
+
+<p>{{WebExtExamples}}</p>
+
+<div class="note"><strong>謝辞</strong>
+
+<p>この API は Chromium の <a href="https://developer.chrome.com/extensions/devtools"><code>chrome.devtools</code></a> API に基づいています。</p>
+
+<p>Microsoft Edge の互換性データは Microsoft Corporation によって提供され、Creative Commons Attribution 3.0 United States License に含まれています。</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>