From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

---
 files/ja/glossary/undefined/index.html | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 files/ja/glossary/undefined/index.html

(limited to 'files/ja/glossary/undefined')

diff --git a/files/ja/glossary/undefined/index.html b/files/ja/glossary/undefined/index.html
new file mode 100644
index 0000000000..0d6330ed09
--- /dev/null
+++ b/files/ja/glossary/undefined/index.html
@@ -0,0 +1,31 @@
+---
+title: undefined
+slug: Glossary/undefined
+tags:
+  - CodingScripting
+  - Glossary
+  - JavaScript
+  - NeedsContent
+translation_of: Glossary/undefined
+---
+<p><span class="seoSummary"><code>undefined</code>は、宣言のみが行われた{{glossary("variable", "変数")}}、あるいは実{{Glossary("Argument","引数")}}が存在しない仮引数に自動的に割り当てられる{{Glossary("primitive", "プリミティブ値")}}のことです。</span></p>
+
+<h2 id="例">例</h2>
+
+<pre class="brush: js">var x; //値を代入しない変数
+
+console.log("x's value is", x) //ログ："x's value is undefined"</pre>
+
+<h2 id="関連情報">関連情報</h2>
+
+<h3 id="一般知識">一般知識</h3>
+
+<ul>
+ <li>Wikipedia 上の記事「<a href="http://en.wikipedia.org/wiki/Undefined%20value">Undefined value</a>（英語）」</li>
+</ul>
+
+<h3 id="Technical_reference" name="Technical_reference">技術リファレンス</h3>
+
+<ul>
+ <li><a href="/ja/docs/Web/JavaScript/Data_structures">JavaScript のデータ型とデータ構造</a></li>
+</ul>
-- 
cgit v1.2.3-54-g00ecf