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Diffstat (limited to 'files/es/web/api/element/hasattribute/index.html')
| -rw-r--r-- | files/es/web/api/element/hasattribute/index.html | 123 |
1 files changed, 123 insertions, 0 deletions
diff --git a/files/es/web/api/element/hasattribute/index.html b/files/es/web/api/element/hasattribute/index.html new file mode 100644 index 0000000000..ea7a38ddff --- /dev/null +++ b/files/es/web/api/element/hasattribute/index.html @@ -0,0 +1,123 @@ +--- +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] && + 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> |
