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---
title: bookmarks.get()
slug: Mozilla/Add-ons/WebExtensions/API/bookmarks/get
tags:
- API
- Add-ons
- Bookmarks
- Extensions
- Method
- Non-standard
- Reference
- WebExtensions
- get
translation_of: Mozilla/Add-ons/WebExtensions/API/bookmarks/get
---
<div>{{AddonSidebar()}}</div>
<p><strong><code>bookmarks.get()</code></strong> は、指定した {{WebExtAPIRef("bookmarks.BookmarkTreeNode")}} の ID（または ID の配列）にマッチするノードを取得するメソッドです。</p>
<h2 id="構文">構文</h2>
<pre class="brush: js">browser.bookmarks.get(
idOrIdList, // 文字列または文字列の配列
callback // 関数
)
</pre>
<h3 id="引数">引数</h3>
<dl>
<dt><code>idOrIdList</code></dt>
<dd>取得したい {{WebExtAPIRef("bookmarks.BookmarkTreeNode", "BookmarkTreeNode")}} オブジェクトの ID を指定した {{jsxref("string")}} または {{jsxref("string")}} の {[jsxref("array")}} です。</dd>
<dt><code>callback</code></dt>
<dd>ノードが取得された際に実行される {{jsxref("function")}} です。この関数には以下の引数が渡ります。</dd>
<dd>
<dl class="reference-values">
<dt><code>results</code></dt>
<dd>各要素が {{WebExtAPIRef("bookmarks.BookmarkTreeNode")}} である、マッチしたノードの {{jsxref("array")}} です。セパレータは結果の戻り値に含まれません。ノードが見つからなかった場合の <code>results</code> は <code>undefined</code> となり、{{WebExtAPIRef("runtime.lastError")}} がセットされます。</dd>
</dl>
</dd>
</dl>
<h2 id="ブラウザ実装状況">ブラウザ実装状況</h2>
<p>{{Compat("webextensions.api.bookmarks.get")}}</p>
<h2 id="使用例">使用例</h2>
<p>以下の例は、特定の ID を持つブックマークが存在するかどうかを確認するものです。</p>
<pre class="brush: js line-numbers language-js"><code class="language-js"><span class="keyword token">function</span> <span class="function token">onGot</span><span class="punctuation token">(</span>bookmarkItems<span class="punctuation token">)</span> <span class="punctuation token">{</span>
<span class="keyword token">if</span> <span class="punctuation token">(</span>bookmarkItems<span class="punctuation token">)</span> <span class="punctuation token">{</span>
console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"bookmark exists!"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="punctuation token">}</span> <span class="keyword token">else</span> <span class="punctuation token">{</span>
console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"bookmark does not exist!"</span><span class="punctuation token">)</span><span class="punctuation token">;</span>
console<span class="punctuation token">.</span><span class="function token">log</span><span class="punctuation token">(</span><span class="string token">"lasterror: "</span> <span class="operator token">+</span> chrome<span class="punctuation token">.</span>runtime<span class="punctuation token">.</span>lastError<span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="punctuation token">}</span>
<span class="punctuation token">}</span>
<span class="keyword token">function</span> <span class="function token">doesBookmarkExist</span><span class="punctuation token">(</span>bookmarkId<span class="punctuation token">)</span> <span class="punctuation token">{</span>
browser<span class="punctuation token">.</span>bookmarks<span class="punctuation token">.</span><span class="keyword token">get</span><span class="punctuation token">(</span>bookmarkId<span class="punctuation token">,</span> onGot<span class="punctuation token">)</span><span class="punctuation token">;</span>
<span class="punctuation token">}</span></code></pre>
<p>{{WebExtExamples}}</p>
<div class="note"><strong>謝辞</strong>
<p>この API は Chromium の <a href="https://developer.chrome.com/extensions/bookmarks#method-get"><code>chrome.bookmarks</code></a> API に基づいています。また、このドキュメントは <a href="https://chromium.googlesource.com/chromium/src/+/master/chrome/common/extensions/api/bookmarks.json"><code>bookmarks.json</code></a> における Chromium のコードに基づいて作成されています。</p>
<p>Microsoft Edge の実装状況は Microsoft Corporation から提供されたものであり、ここでは Creative Commons Attribution 3.0 United States License に従います。</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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