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author | MDN <actions@users.noreply.github.com> | 2022-03-19 00:13:08 +0000 |
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committer | MDN <actions@users.noreply.github.com> | 2022-03-19 00:13:08 +0000 |
commit | 9bf6693b2edd5281c1577856895c55653a41dc01 (patch) | |
tree | 0143e1d1d5c95776e42d8d9afdddedb13a0827c1 /files/es/web/css/attr()/index.html | |
parent | 376471eb81e0a3dc263128f834e3c8c22bb9b4d6 (diff) | |
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diff --git a/files/es/web/css/attr()/index.html b/files/es/web/css/attr()/index.html deleted file mode 100644 index d47f8e6b88..0000000000 --- a/files/es/web/css/attr()/index.html +++ /dev/null @@ -1,182 +0,0 @@ ---- -title: attr -slug: Web/CSS/attr() -translation_of: Web/CSS/attr() ---- -<p>{{ CSSRef() }}</p> - -<h2 id="Resumen">Resumen</h2> - -<p>La función <code>attr()</code> de <a href="/en-US/docs/Web/CSS">CSS</a> se usa para recuperar el valor de un atributo del elemento seleccionado y usarlo en la hoja de estilos. Se puede usar también en un pseudo-elemento y, en este caso, el valor del atributo en el elemento originado del pseudo-elemento es devuelto.</p> - -<p>La función <code>attr()</code> de <a href="/en-US/docs/Web/CSS">CSS</a> se puede usar con cualquier propiedad de CSS. {{ experimental_inline() }}</p> - -<h2 id="Sintaxis">Sintaxis</h2> - -<pre class="syntaxbox notranslate"><a href="/en-US/docs/Web/CSS/Value_definition_syntax">Sintaxis formal</a>: attr( attribute-name <type-or-unit>? [, <fallback> ]? ) -</pre> - -<h3 id="Valores">Valores</h3> - -<dl> - <dt><code>attribute-name</code></dt> - <dd>Es el nombre de un atributo en el elemento HTML al que se hace referencia en el CSS. Soporte para otros atributos a parte de {{ cssxref("content") }} es {{ experimental_inline() }}.</dd> - <dt><code><type-</code>or-unit></dt> - <dd>Es una palabra clave que representa o el tipo del valor del atributo, o su unidad, pues en HTML algunos atributos tienen unidades implícitas. Si el uso de <code><type-or-unit></code> como valor del atributo especificado no es válido, la expresión <code>attr()</code> también será no válida. Si se omite, el valor por defecto es string. La lista de valores válidos son: - <table class="standard-table"> - <thead> - <tr> - <th scope="col">Keyword</th> - <th scope="col">Associated type</th> - <th scope="col">Comment</th> - <th scope="col">Default value</th> - </tr> - </thead> - <tbody> - <tr> - <td><code>string</code></td> - <td>{{cssxref("<string>")}}</td> - <td>El valor del atributo es tratado como una {{cssxref("<string>")}} de CSS. No se reparsea, y en este caso particular los caracteres son usados tal y como son en vez de convertirlos en diferentes caracteres de CSS.</td> - <td>Cadena vacía</td> - </tr> - <tr> - <td><code>color</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<color>")}}</td> - <td>El valor del atributo es tratado como hash (3- or 6-value hash) o a una palabra clave. Debe ser un valor válido de una {{cssxref("<string>")}} de CSS.<br> - Los espacios iniciales y finales son eliminados.</td> - <td><code>currentColor</code></td> - </tr> - <tr> - <td><code>url</code> {{ experimental_inline() }}</td> - <td>{{ cssxref("<uri>") }}</td> - <td>El valor del atributo es tratado como una cadena que se usa en una función <code>url()</code> de CSS.<br> - URLs relativas se resuelven con respecto al documento original, no respecto a la hoja de estilos. Los espacios iniciales y finales son eliminados.</td> - <td>La url <code>about:invalid</code> que apunta a un documento inexistente con una condición de error genérico.</td> - </tr> - <tr> - <td><code>integer</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<integer>")}}</td> - <td>El valor del atributo es tratado como un {{cssxref("<integer>")}} CSS. Si no es válido, si no es un entero o está fuera del rango aceptado por la propiedad CSS, se usa el valor por defecto.<br> - Los espacios iniciales y finales son eliminados.</td> - <td><code>0</code>, or, if <code>0</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>number</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<number>")}}</td> - <td>El valor del atributo es tratado como {{cssxref("<number>")}}. Si no es válido, si no es un número o está fuera del rango aceptado por la propiedad CSS, se usa el valor por defecto.<br> - Los espacios iniciales y finales son eliminados.</td> - <td><code>0</code>, or, if <code>0</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>length</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<length>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<length>")}} dimension, that is including the unit (e.g. <code>12.5em</code>). If it is not valid, that is not a length or out of the range accepted by the CSS property, the default value is used.<br> - If the given unit is a relative length, <code>attr()</code>computes it to an absolute length.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0</code>, or, if <code>0</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>em</code>, <code>ex</code>, <code>px</code>, <code>rem</code>, <code>vw</code>, <code>vh</code>, <code>vmin</code>, <code>vmax</code>, <code>mm</code>, <code>cm</code>, <code>in</code>, <code>pt</code>, or <code>pc</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<length>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<number>")}}, that is without the unit (e.g. <code>12.5</code>), and interpreted as a {{cssxref("<length>")}} with the specified unit. If it is not valid, that is not a number or out of the range accepted by the CSS property, the default value is used.<br> - If the given unit is a relative length, <code>attr()</code>computes it to an absolute length.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0</code>, or, if <code>0</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>angle</code> {{ experimental_inline() }}</td> - <td>{{ cssxref("<angle>") }}</td> - <td>The attribute value is parsed as a CSS {{ cssxref("<angle>") }} dimension, that is including the unit (e.g. <code>30.5deg</code>). If it is not valid, that is not an angle or out of the range accepted by the CSS property, the default value is used.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0deg</code>, or, if <code>0deg</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>deg</code>, <code>grad</code>, <code>rad</code> {{ experimental_inline() }}</td> - <td>{{ cssxref("<angle>") }}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<number>")}}, that is without the unit (e.g. <code>12.5</code>), and interpreted as an {{ cssxref("<angle>") }} with the specified unit. If it is not valid, that is not a number or out of the range accepted by the CSS property, the default value is used.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0deg</code>, or, if <code>0deg</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>time</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<time>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<time>")}} dimension, that is including the unit (e.g. <code>30.5ms</code>). If it is not valid, that is not a time or out of the range accepted by the CSS property, the default value is used.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0s</code>, or, if <code>0s</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>s</code>, <code>ms</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<time>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<number>")}}, that is without the unit (e.g. <code>12.5</code>), and interpreted as an{{cssxref("<time>")}} with the specified unit. If it is not valid, that is not a number or out of the range accepted by the CSS property, the default value is used.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0s</code>, or, if <code>0s</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>frequency</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<frequency>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<frequency>")}} dimension, that is including the unit (e.g. <code>30.5kHz</code>). If it is not valid, that is not a frequency or out of the range accepted by the CSS property, the default value is used.</td> - <td><code>0Hz</code>, or, if <code>0Hz</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>Hz</code>, <code>kHz</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<frequency>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<number>")}}, that is without the unit (e.g. <code>12.5</code>), and interpreted as a {{cssxref("<frequency>")}} with the specified unit. If it is not valid, that is not a number or out of the range accepted by the CSS property, the default value is used.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0Hz</code>, or, if <code>0Hz</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - <tr> - <td><code>%</code> {{ experimental_inline() }}</td> - <td>{{cssxref("<percentage>")}}</td> - <td>The attribute value is parsed as a CSS {{cssxref("<number>")}}, that is without the unit (e.g. <code>12.5</code>), and interpreted as a {{cssxref("<percentage>")}}. If it is not valid, that is not a number or out of the range accepted by the CSS property, the default value is used.<br> - If the given value is used as a length, <code>attr()</code>computes it to an absolute length.<br> - Leading and trailing spaces are stripped.</td> - <td><code>0%</code>, or, if <code>0%</code> is not a valid value for the property, the property's minimum value.</td> - </tr> - </tbody> - </table> - </dd> - <dt><code><fallback></code></dt> - <dd>The value to be used if the associated attribute is missing or contains an invalid value. The fallback value must be valid where <code>attr()</code> is used, even if it is not used, and must not contain another <code>attr()</code> expression. If <code>attr()</code> is not the sole component value of a property, its <code><fallback></code> value must be of the type defined by <code><type-or-unit></code>. If not set, CSS will use the default value defined for each <code><type-or-unit></code>.</dd> -</dl> - -<h2 id="Examples">Examples</h2> - -<pre class="brush: css notranslate">p::before { - content:attr(data-foo) " "; -} -</pre> - -<pre class="brush: html notranslate"><p data-foo="hello">world</p> -</pre> - -<h3 id="Result">Result</h3> - -<p>{{ EmbedLiveSample("Examples", '100%', '80') }}</p> - -<h2 id="Specifications" name="Specifications">Specifications</h2> - -<table class="standard-table"> - <thead> - <tr> - <th scope="col">Specification</th> - <th scope="col">Status</th> - <th scope="col">Comment</th> - </tr> - </thead> - <tbody> - <tr> - <td>{{ SpecName('CSS3 Values', '#attr', 'attr()') }}</td> - <td>{{ Spec2('CSS3 Values') }}</td> - <td>Added two optional parameters; can be used on all properties; may return other values than {{cssxref("<string>")}}. These changes are {{ experimental_inline() }} and may be dropped during the CR phase if browser support is too small.</td> - </tr> - <tr style="vertical-align: top;"> - <td style="vertical-align: top;">{{ SpecName('CSS2.1', 'generate.html#x18', 'attr()') }}</td> - <td style="vertical-align: top;">{{ Spec2('CSS2.1') }}</td> - <td style="vertical-align: top;">Limited to the {{ cssxref("content") }} property; always return a {{cssxref("<string>")}}</td> - </tr> - </tbody> -</table> - -<h2 id="Browser_compatibility">Browser compatibility</h2> - -{{Compat("css.types.attr")}} |