---
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">
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