---
title: i18n.LanguageCode
slug: Mozilla/Add-ons/WebExtensions/API/i18n/LanguageCode
tags:
  - API
  - Add-ons
  - Extensions
  - LanguageCode
  - Non-standard
  - Reference
  - Type
  - WebExtensions
  - i18n
translation_of: Mozilla/Add-ons/WebExtensions/API/i18n/LanguageCode
---
<div>{{AddonSidebar()}}</div>

<p><code>"en-US"</code> や "<code>fr</code>" などの <a href="https://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.10">言語タグ</a>。</p>

<h2 id="Types" name="Types">型</h2>

<p>この型の値は文字列です。</p>

<h2 id="Browser_compatibility" name="Browser_compatibility">ブラウザーの実装状況</h2>

<p>{{Compat("webextensions.api.i18n.LanguageCode")}}</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#type-LanguageCode"><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>

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