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

---
 .../reference/errors/not_a_codepoint/index.html    | 55 ++++++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 files/ja/web/javascript/reference/errors/not_a_codepoint/index.html

(limited to 'files/ja/web/javascript/reference/errors/not_a_codepoint')

diff --git a/files/ja/web/javascript/reference/errors/not_a_codepoint/index.html b/files/ja/web/javascript/reference/errors/not_a_codepoint/index.html
new file mode 100644
index 0000000000..c993da422c
--- /dev/null
+++ b/files/ja/web/javascript/reference/errors/not_a_codepoint/index.html
@@ -0,0 +1,55 @@
+---
+title: 'RangeError: argument is not a valid code point'
+slug: Web/JavaScript/Reference/Errors/Not_a_codepoint
+tags:
+  - Errors
+  - JavaScript
+  - RangeError
+translation_of: Web/JavaScript/Reference/Errors/Not_a_codepoint
+---
+<div>{{jsSidebar("Errors")}}</div>
+
+<h2 id="メッセージ">メッセージ</h2>
+
+<pre class="syntaxbox">RangeError: {0} is not a valid code point (Firefox)
+RangeError: Invalid code point {0} (Chrome)
+</pre>
+
+<h2 id="エラータイプ">エラータイプ</h2>
+
+<p>{{jsxref("RangeError")}}</p>
+
+<h2 id="何がうまくいかなかったのか？">何がうまくいかなかったのか？</h2>
+
+<p>{{jsxref("String.fromCodePoint()")}} メソッドは、有効なコードポイントのみを受け付けます。</p>
+
+<p><a href="https://ja.wikipedia.org/wiki/%E7%AC%A6%E5%8F%B7%E7%82%B9">コードポイント</a>は、ユニコード文字集合の値です。これは整数 <code>0</code> から <code>0x10FFFF</code> までの範囲です。</p>
+
+<p>{{jsxref("NaN")}} や、-1 などの負数（negative Integers）、3.14 などの非整数値（non-integers）、<code>0x10FFFF</code>（<code>1114111</code>）より大きい値をこのメソッドで使うことはできません。</p>
+
+<h2 id="例">例</h2>
+
+<h3 id="無効なケース">無効なケース</h3>
+
+<pre class="brush: js example-bad">String.fromCodePoint('_');      // RangeError
+String.fromCodePoint(Infinity); // RangeError
+String.fromCodePoint(-1);       // RangeError
+String.fromCodePoint(3.14);     // RangeError
+String.fromCodePoint(3e-2);     // RangeError
+String.fromCodePoint(NaN);      // RangeError</pre>
+
+<h3 id="有効なケース">有効なケース</h3>
+
+<pre class="brush: js example-good">String.fromCodePoint(42);       // "*"
+String.fromCodePoint(65, 90);   // "AZ"
+String.fromCodePoint(0x404);    // "\u0404"
+String.fromCodePoint(0x2F804);  // "\uD87E\uDC04"
+String.fromCodePoint(194564);   // "\uD87E\uDC04"
+String.fromCodePoint(0x1D306, 0x61, 0x1D307) // "\uD834\uDF06a\uD834\uDF07"
+</pre>
+
+<h2 id="関連項目">関連項目</h2>
+
+<ul>
+ <li>{{jsxref("String.fromCodePoint()")}}</li>
+</ul>
-- 
cgit v1.2.3-54-g00ecf