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+---
+title: DOMStringMap
+slug: Web/API/DOMStringMap
+tags:
+  - API
+translation_of: Web/API/DOMStringMap
+---
+<p>{{ APIRef("HTML DOM") }}</p>
+
+<p><span class="seoSummary">Used by the {{ htmlattrxref("dataset") }} HTML attribute to represent data for custom attributes added to elements.</span></p>
+
+<h2 id="Доступные_методы">Доступные методы</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="Методы">Методы</h2>
+
+<h3 id="hasDataAttr()">hasDataAttr()</h3>
+
+<pre class="eval">boolean hasDataAttr(
+  in DOMString prop
+);
+</pre>
+
+<h4 id="Аргументы">Аргументы</h4>
+
+<dl>
+ <dt><code>prop</code></dt>
+ <dd>The property for which to check for the existence of a value.</dd>
+</dl>
+
+<h4 id="Возвращаемое_значение">Возвращаемое значение</h4>
+
+<p><code>true</code> if the property exists; otherwise <code>false</code>.</p>
+
+<h3 id="removeDataAttr()">removeDataAttr()</h3>
+
+<pre class="eval">void removeDataAttr(
+  in DOMString prop
+);
+</pre>
+
+<h4 id="Parameters">Parameters</h4>
+
+<dl>
+ <dt><code>prop</code></dt>
+ <dd>The property to remove from the data set.</dd>
+</dl>
+
+<h3 id="removeProp()">removeProp()</h3>
+
+<p>Removes the property from the dataset object. Used to update the dataset object when data-* attribute has been removed from the element.</p>
+
+<pre class="eval">void removeProp(
+  in nsIAtom attr
+);
+</pre>
+
+<h4 id="Parameters_2">Parameters</h4>
+
+<dl>
+ <dt><code>attr</code></dt>
+ <dd>The property to remove from the dataset.</dd>
+</dl>
+
+<h2 id="Поддержка_браузерами">Поддержка браузерами</h2>
+
+<p> </p>
+
+<div class="hidden">
+<p>The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out <a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a>and send us a pull request.</p>
+</div>
+
+<p>{{Compat("api.DOMStringMap")}}</p>
+
+<h2 id="См._далее">См. далее</h2>
+
+<ul>
+ <li>{{ domxref("HTMLElement.dataset") }}</li>
+ <li>{{ htmlattrxref("dataset") }}</li>
+</ul>