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---
title: i18n.getAcceptLanguages()
slug: Mozilla/Add-ons/WebExtensions/API/i18n/getAcceptLanguages
tags:
- API
- Add-ons
- Extensions
- Method
- Non-standard
- Reference
- WebExtensions
- getAcceptLanguages
- i18n
translation_of: Mozilla/Add-ons/WebExtensions/API/i18n/getAcceptLanguages
---
<div>{{AddonSidebar()}}</div>
<p>ブラウザーの <a href="/ja/docs/Web/HTTP/Content_negotiation#The_Accept-Language_header">accept-languages</a> を取得します。これは、ブラウザーに使用されているロケールとは異なります。ロケールを取得するには、{{WebExtAPIRef('i18n.getUILanguage')}} を使用してください。</p>
<p>これは、<code><a href="/ja/docs/Web/JavaScript/Reference/Global_Objects/Promise">Promise</a></code> を返す非同期関数です。</p>
<h2 id="Syntax" name="Syntax">構文</h2>
<pre class="syntaxbox brush:js">var gettingAcceptLanguages = browser.i18n.getAcceptLanguages()
</pre>
<h3 id="Parameters" name="Parameters">引数</h3>
<p>なし。</p>
<h3 id="Return_value" name="Return_value">戻り値</h3>
<p><code>{{WebExtAPIRef('i18n.LanguageCode')}}</code> オブジェクトの <code>配列</code> で処理が完了した <code><a href="/ja/docs/Web/JavaScript/Reference/Global_Objects/Promise">Promise</a></code>。</p>
<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの実装状況</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.i18n.getAcceptLanguages")}}</p>
<h2 id="Examples" name="Examples">例</h2>
<pre class="brush: js">function onGot(languages) {
console.log(languages);
//e.g. Array [ "en-US", "en" ]
}
var gettingAcceptLanguages = browser.i18n.getAcceptLanguages();
gettingAcceptLanguages.then(onGot);
</pre>
<p> </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/i18n#method-getAcceptLanguages"><code>chrome.i18n</code></a> API を基にしています。このドキュメンテーションは、Chromium コード内の <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/i18n.json"><code>i18n.json</code></a> に由来しています。</p>
<p>Microsoft Edge 互換性データは、Microsoft Corporation より供給され、Creative Commons Attribution 3.0 United States License の下で含まれています。</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>
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