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---
title: DOMStringMap
slug: Web/API/DOMStringMap
translation_of: Web/API/DOMStringMap
---
<p>{{ APIRef("HTML DOM") }}</p>
<p>Usado pelo atributo HTML {{ htmlattrxref("dataset") }} para representar atributos próprios adicionados ao elemento.</p>
<h2 id="Method_overview" name="Method_overview">Visão Geral do Método</h2>
<table class="standard-table">
<tbody>
<tr>
<td><code>DOMString <a href="#getDataAttr()">getDataAttr</a>(in DOMString prop);</code></td>
</tr>
<tr>
<td><code>boolean <a href="#hasDataAttr()">hasDataAttr</a>(in DOMString prop);</code></td>
</tr>
<tr>
<td><code>void <a href="#removeDataAttr()">removeDataAttr</a>(in DOMString prop);</code></td>
</tr>
<tr>
<td><code>void <a href="#removeProp()">removeProp</a>(in nsIAtom attr);</code></td>
</tr>
<tr>
<td><code>void <a href="#setDataAttr()">setDataAttr</a>(in DOMString prop, in DOMString value);</code></td>
</tr>
</tbody>
</table>
<h2 id="Methods" name="Methods">Métodos</h2>
<h3 id="hasDataAttr()">hasDataAttr()</h3>
<pre class="eval">boolean hasDataAttr(
in DOMString prop
);
</pre>
<h6 id="Parameters" name="Parameters">Parâmetros</h6>
<dl>
<dt><code>prop</code></dt>
<dd>Nome da propriedade a qual a existência deve ser verificada.</dd>
</dl>
<h6 id="Return_value" name="Return_value">Retorno</h6>
<p><code>true</code> se a propriedade existir ou <code>false</code> se não existir.</p>
<h3 id="removeDataAttr()">removeDataAttr()</h3>
<pre class="eval">void removeDataAttr(
in DOMString prop
);
</pre>
<h6 id="Parameters" name="Parameters">Parâmetros</h6>
<dl>
<dt><code>prop</code></dt>
<dd>Propriedade a ser removida do data set.</dd>
</dl>
<h3 id="removeProp()">removeProp()</h3>
<p>Remove a propriedade do dataset do objeto. Usada para atualizar o objeto de dataset do objeto quando o atributo data-* houver sido removido do elemento.</p>
<pre class="eval">void removeProp(
in nsIAtom attr
);
</pre>
<h6 id="Parameters" name="Parameters">Parâmetros</h6>
<dl>
<dt><code>attr</code></dt>
<dd>A propriedade a ser removida do dataset.</dd>
</dl>
<h2 id="Compatibilidade">Compatibilidade</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>Suporte básico</td>
<td>{{ CompatUnknown() }}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{ CompatGeckoDesktop("6.0") }}</td>
<td>{{ CompatUnknown() }}</td>
<td>{{ CompatUnknown() }}</td>
<td>{{ CompatUnknown() }}</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>Suporte básico</td>
<td>{{ CompatUnknown() }}</td>
<td>{{CompatVersionUnknown}}</td>
<td>{{ CompatUnknown() }}</td>
<td>{{ CompatUnknown() }}</td>
<td>{{ CompatUnknown() }}</td>
<td>{{ CompatUnknown() }}</td>
</tr>
</tbody>
</table>
</div>
<h2 id="Veja_também">Veja também</h2>
<ul>
<li>{{ domxref("HTMLElement.dataset") }}</li>
<li>{{ htmlattrxref("dataset") }}</li>
</ul>
|
