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+---
+title: downloads.show()
+slug: Mozilla/Add-ons/WebExtensions/API/downloads/show
+tags:
+  - API
+  - Add-ons
+  - Extensions
+  - Méthode
+  - Non-standard
+  - Reference
+  - WebExtensions
+  - downloads
+  - show
+translation_of: Mozilla/Add-ons/WebExtensions/API/downloads/show
+---
+<div>{{AddonSidebar()}}</div>
+
+<p>La fonction <code><strong>show</strong></code><strong><code>()</code></strong> de l'API {{WebExtAPIRef("downloads")}} affiche le fichier téléchargé dans son dossier contenant dans le gestionnaire de fichiers de la plate-forme sous-jacente.</p>
+
+<p>C'est une fonction asynchrone qui renvoie une <code><a href="/fr/docs/Web/JavaScript/Reference/Objets_globaux/Promise">Promise</a></code>.</p>
+
+<h2 id="Syntaxe">Syntaxe</h2>
+
+<pre class="syntaxbox brush:js">var showing = browser.downloads.show(
+  downloadId             // integer
+)
+</pre>
+
+<h3 id="Paramètes">Paramètes</h3>
+
+<dl>
+ <dt><code>downloadId</code></dt>
+ <dd>Un <code>integer</code> représentant l'ID du {{WebExtAPIRef("downloads.DownloadItem", "DownloadItem")}} à afficher.</dd>
+</dl>
+
+<h3 id="Valeur_retournée">Valeur retournée</h3>
+
+<p>Une <code><a href="/fr/docs/Web/JavaScript/Reference/Objets_globaux/Promise">Promise</a></code>. Si la demande est acceptée, la promise sera remplie avec un booléen indiquant si la demande a été acceptée. Si la demande échoue, la promise sera rejetée avec un message d'erreur.</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.downloads.show")}}</p>
+
+<h2 id="Exemples">Exemples</h2>
+
+<p>Cet exemple montre l'élément le plus récemment téléchargé :</p>
+
+<pre class="brush: js">function onShowing(success) {
+  console.log(`Showing download item: ${success}`);
+}
+
+function onError(error) {
+  console.log(`Error opening item: ${error}`);
+}
+
+function openDownload(downloadItems) {
+    if (downloadItems.length &gt; 0) {
+      latestDownloadId = downloadItems[0].id;
+      var showing = browser.downloads.show(latestDownloadId);
+      showing.then(onShowing, onError);
+    }
+  }
+
+var searching = browser.downloads.search({
+  limit: 1,
+  orderBy: ["-startTime"]
+});
+
+searching.then(openDownload, onError);</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/downloads"><code>chrome.downloads</code></a>.</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>