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authorFlorian Merz <me@fiji-flo.de>2021-02-11 14:45:38 +0100
committerFlorian Merz <me@fiji-flo.de>2021-02-11 14:45:38 +0100
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+---
+title: 'RangeError: argument is not a valid code point'
+slug: Web/JavaScript/Reference/Fehler/Not_a_codepoint
+tags:
+ - Errors
+ - JavaScript
+ - RangeError
+translation_of: Web/JavaScript/Reference/Errors/Not_a_codepoint
+---
+<div>{{jsSidebar("Errors")}}</div>
+
+<h2 id="Fehlermeldung">Fehlermeldung</h2>
+
+<pre class="syntaxbox">RangeError: {0} is not a valid code point (Firefox)
+RangeError: Invalid code point {0} (Chrome)
+</pre>
+
+<h2 id="Fehlertyp">Fehlertyp</h2>
+
+<p>{{jsxref("RangeError")}}</p>
+
+<h2 id="Was_ist_falsch_gelaufen">Was ist falsch gelaufen?</h2>
+
+<p>Die {{jsxref("String.fromCodePoint()")}} Methode erwartet gültige Codepoint.</p>
+
+<p>Ein <a href="https://de.wikipedia.org/wiki/Codepoint">Codepoint</a>  ist ein Wert im Unicode Coderaum, der als Integer im Wertebereich zwischen <code>0</code> und <code>0x10FFFF liegt</code>.</p>
+
+<p>Die Verwendung von {{jsxref("NaN")}} , negativen Integern (<code>-1</code>), nicht Integern (<code>3.14</code>) und Werten die größer als <code>0x10FFFF</code> (<code>1114111</code>) sind, werden einen Fehler bei dieser Methode produzieren.</p>
+
+<h2 id="Beispiele">Beispiele</h2>
+
+<h3 id="Ungültige_Fälle">Ungültige Fälle</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="Gültige_Fälle">Gültige Fälle</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="Siehe_auch">Siehe auch</h2>
+
+<ul>
+ <li>{{jsxref("String.fromCodePoint()")}}</li>
+</ul>