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---
title: Object.prototype.__count__
slug: Web/JavaScript/Referencia/Objetos_globales/Object/count
translation_of: Archive/Web/JavaScript/Object.count
---
<div>{{JSRef}} {{obsolete_header("2")}}</div>
<p>La propiedad <strong><code>__count__</code></strong> es usada para almacenar el número de propiedades enumerables de un objeto, pero esta ha sido eliminada.</p>
<h2 id="Síntaxis">Síntaxis</h2>
<pre class="syntaxbox"><code><var>obj</var>.__count__</code></pre>
<h2 id="Ejemplos">Ejemplos</h2>
<pre class="brush: js">{ 1: 1 }.__count__ // 1
[].__count__ // 0
[1].__count__ // 1
[1, /* hole */, 2, 3].__count__ // 3
</pre>
<h2 id="Especificaciones">Especificaciones</h2>
<p>No forma parte de ninguna especificación.</p>
<h2 id="Compatibilidad_en_navegadores">Compatibilidad en navegadores</h2>
<div>{{CompatibilityTable}}</div>
<div id="compat-desktop">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Chrome</th>
<th>Firefox (Gecko)</th>
<th>Internet Explorer</th>
<th>Opera</th>
<th>Safari</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
<td>{{CompatNo}}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="Ver_también">Ver también</h2>
<ul>
<li><a class="external" href="http://whereswalden.com/2010/04/06/more-changes-coming-to-spidermonkey-the-magical-__count__-property-of-objects-is-being-removed/">[Blog post] More changes coming to SpiderMonkey: the magical __count__ property is being removed</a></li>
</ul>
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