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+---
+title: Map.prototype.clear()
+slug: Web/JavaScript/Reference/Global_Objects/Map/clear
+tags:
+  - ECMAScript 2015
+  - JavaScript
+  - Map
+  - metodo
+translation_of: Web/JavaScript/Reference/Global_Objects/Map/clear
+---
+<div>{{JSRef}}</div>
+
+<p>Il metodo <code><strong>clear()</strong></code> rimuove tutti gli elementi di un oggetto <code>Map</code>.</p>
+
+<div>{{EmbedInteractiveExample("pages/js/map-prototype-clear.html")}}</div>
+
+
+
+<h2 id="Sintassi">Sintassi</h2>
+
+<pre class="syntaxbox"><code><em>myMap</em>.clear();</code></pre>
+
+<h3 id="Valore_di_ritorno">Valore di ritorno</h3>
+
+<p>{{jsxref("undefined")}}.</p>
+
+<h2 id="Esempi">Esempi</h2>
+
+<h3 id="Utilizzare_il_metodo_clear">Utilizzare il metodo <code>clear</code></h3>
+
+<pre class="brush: js">var myMap = new Map();
+myMap.set('bar', 'baz');
+myMap.set(1, 'foo');
+
+myMap.size;       // 2
+myMap.has('bar'); // true
+
+myMap.clear();
+
+myMap.size;       // 0
+myMap.has('bar')  // false
+</pre>
+
+<h2 id="Specifiche">Specifiche</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('ES2015', '#sec-map.prototype.clear', 'Map.prototype.clear')}}</td>
+   <td>{{Spec2('ES2015')}}</td>
+   <td>Definizione iniziale.</td>
+  </tr>
+  <tr>
+   <td>{{SpecName('ESDraft', '#sec-map.prototype.clear', 'Map.prototype.clear')}}</td>
+   <td>{{Spec2('ESDraft')}}</td>
+   <td> </td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilità_Browser">Compatibilità Browser</h2>
+
+
+
+<p>{{Compat("javascript.builtins.Map.clear")}}</p>
+
+<h2 id="Vedi_anche">Vedi anche</h2>
+
+<ul>
+ <li>{{jsxref("Map")}}</li>
+</ul>