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---
title: Number.NaN
slug: Web/JavaScript/Reference/Global_Objects/Number/NaN
tags:
- JavaScript
- Número
- Propiedad
translation_of: Web/JavaScript/Reference/Global_Objects/Number/NaN
original_slug: Web/JavaScript/Referencia/Objetos_globales/Number/NaN
---
<div>{{JSRef}}</div>
<p>La propiedad <strong><code>Number.NaN</code></strong> representa Not-A-Number (No es numero). Equivalente de {{jsxref("NaN")}}.</p>
<div>{{EmbedInteractiveExample("pages/js/number-nan.html")}}</div>
<p>No tienes que crear un objeto {{jsxref("Number")}} para acceder a esta propiedad estática (usa <code>Number.NaN</code>).</p>
<div>{{js_property_attributes(0, 0, 0)}}</div>
<h2 id="Ejemplos">Ejemplos</h2>
<h3 id="Chequea_si_los_valores_son_numericos">Chequea si los valores son numericos</h3>
<pre class="brush: js notranslate">function sanitise(x) {
if (isNaN(x)) {
return Number.NaN;
}
return x;
}</pre>
<h3 id="Testing_against_NaN">Testing against NaN</h3>
<p>See <a href="/en-US/docs/Web/JavaScript/Reference/Global_Objects/NaN#Testing_against_NaN">Testing against NaN</a> on the <code>NaN</code> page.</p>
<h2 id="Especificaciones">Especificaciones</h2>
<table class="standard-table">
<tbody>
<tr>
<th scope="col">Especificación</th>
</tr>
<tr>
<td>{{SpecName('ESDraft', '#sec-number.nan', 'Number.NaN')}}</td>
</tr>
</tbody>
</table>
<h2 id="Browser_compatibility">Browser compatibility</h2>
<p class="hidden">The compatibility table in this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a> and send us a pull request.</p>
<p>{{Compat("javascript.builtins.Number.NaN")}}</p>
<h2 id="Tambien_mira">Tambien mira</h2>
<ul>
<li>El objeto global {{jsxref("NaN")}} .</li>
<li>El objeto {{jsxref("Number")}} al que pertenece.</li>
</ul>
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