From 1109132f09d75da9a28b649c7677bb6ce07c40c0 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:41:45 -0500
Subject: initial commit

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+---
+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>
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