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+---
+title: extension.getBackgroundPage()
+slug: Mozilla/Add-ons/WebExtensions/API/extension/getBackgroundPage
+tags:
+  - API
+  - Add-ons
+  - Extension
+  - Extensions
+  - Méthode
+  - Non-standard
+  - Reference
+  - WebExtensions
+  - getBackgroundPage
+translation_of: Mozilla/Add-ons/WebExtensions/API/extension/getBackgroundPage
+---
+<div>{{AddonSidebar()}}</div>
+
+<p>Alias de {{WebExtAPIRef("runtime.getBackgroundPage()")}}.</p>
+
+<div class="note">
+<p><strong>Remarque</strong> : Cette méthode ne peut pas être utilisée en mode Navigation privée - elle renvoie toujours un tableau vide. Pour plus d'informations, voir {{bug(1329304)}}.</p>
+</div>
+
+<h2 id="Syntaxe">Syntaxe</h2>
+
+<pre class="syntaxbox brush:js">var page = browser.extension.getBackgroundPage()
+</pre>
+
+<h3 id="Paramètres">Paramètres</h3>
+
+<dl>
+ <dd>None.</dd>
+</dl>
+
+<h3 id="Valeur_retournée">Valeur retournée</h3>
+
+<p><code>object</code>. <a href="/fr/docs/Web/API/Window">Window</a> de la page d'arrière plan.</p>
+
+<h2 id="Compatibilité_du_navigateur">Compatibilité du navigateur</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.extension.getBackgroundPage")}}</p>
+
+<h2 id="Exemples">Exemples</h2>
+
+<p>Supposons un  <a href="/fr/Add-ons/WebExtensions/Anatomy_of_a_WebExtension#Background_scripts">script d'arrière plan</a> définisse une fonction <code>foo()</code>:</p>
+
+<pre class="brush: js">// background.js
+
+function foo() {
+  console.log("I'm defined in background.js");
+}</pre>
+
+<p>Un script exécuté dans un <a href="/fr/Add-ons/WebExtensions/Anatomy_of_a_WebExtension#Browser_actions_2">popup</a> peut appeler cette fonction directement comme ceci :</p>
+
+<pre class="brush: js">// popup.js
+
+var page = browser.extension.getBackgroundPage();
+page.foo(); // -&gt; "I'm defined in background.js"</pre>
+
+<p>{{WebExtExamples}}</p>
+
+<div class="note"><strong>Remerciements :</strong>
+
+<p>Cette API est basée sur l'API Chromium <a href="https://developer.chrome.com/extensions/extension"><code>chrome.extension</code></a>. Cette documentation est dérivée de <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/extension.json"><code>extension.json</code></a> dans le code Chromium.</p>
+
+<p>Les données de compatibilité relatives à Microsoft Edge sont fournies par Microsoft Corporation et incluses ici sous la licence Creative Commons Attribution 3.0 pour les États-Unis.</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>