---
title: Element.hasAttribute()
slug: Web/API/Element/hasAttribute
translation_of: Web/API/Element/hasAttribute
---
<div>{{APIRef("DOM")}}</div>

<p>El método <strong><code>Elemento.hasAttribute()</code></strong> devuelve un valor <strong>Booleano</strong> indicando si el elemento tiene el atributo especificado o no.</p>

<h2 id="Sintaxis">Sintaxis</h2>

<pre class="brush: js"><var>var <em>resultado</em></var> = <em><var>elemento</var></em>.hasAttribute(<em><var>nombre</var></em>);
</pre>

<dl>
 <dt><code>resultado</code></dt>
 <dd>contendrá el valor devuelto (<code>true</code> o <code>false)</code>.</dd>
 <dt><code>nombre</code></dt>
 <dd>consiste en una cadena de caracteres que representa el nombre del atributo a chequear.</dd>
</dl>

<h2 id="Ejemplo">Ejemplo</h2>

<pre class="brush:js">var foo = document.getElementById("foo");
if (foo.hasAttribute("bar")) {
    // hacer algo
}
</pre>

<h2 id="Polyfill">Polyfill</h2>

<pre class="brush:js">;(function(prototype) {
    prototype.hasAttribute = prototype.hasAttribute || function(name) {
        return !!(this.attributes[name] &amp;&amp;
                  this.attributes[name].specified);
    }
})(Element.prototype);
</pre>

<h2 id="Notas">Notas</h2>

<div>{{DOMAttributeMethods}}</div>

<h2 id="Especificaciones">Especificaciones</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName('DOM WHATWG', '#dom-element-hasattribute', 'Element.hasAttribute()')}}</td>
   <td>{{Spec2('DOM WHATWG')}}</td>
   <td>From {{SpecName('DOM3 Core')}}, moved from {{domxref("Node")}} to {{domxref("Element")}}</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM3 Core', 'core.html#ID-ElHasAttr', 'Element.hasAttribute()')}}</td>
   <td>{{Spec2('DOM3 Core')}}</td>
   <td>No change from {{SpecName('DOM2 Core')}}</td>
  </tr>
  <tr>
   <td>{{SpecName('DOM2 Core', 'core.html#ID-ElHasAttr', 'Element.hasAttribute()')}}</td>
   <td>{{Spec2('DOM2 Core')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="Compatibilidad_de_navegadores">Compatibilidad de navegadores</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>8.0</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Edge</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>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatVersionUnknown}}</td>
  </tr>
 </tbody>
</table>
</div>