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----
-title: Storage.clear()
-slug: Web/API/Storage/clear
-tags:
- - API
- - Persistenza
- - Persistenza Browser
- - Riferimento
- - metodo
-translation_of: Web/API/Storage/clear
----
-<p>{{APIRef("Web Storage API")}}</p>
-
-<p><font><font>Il metodo </font></font><code>clear()</code> dell'interfaccia {{domxref("Storage")}} , quando invocato, pulisce tutte le chiavi salvate.</p>
-
-<h2 id="Sintassi">Sintassi</h2>
-
-<pre class="brush: js"><em>storage</em>.clear();</pre>
-
-<h3 id="Return_value">Return value</h3>
-
-<p>{{jsxref("undefined")}}.</p>
-
-<h2 id="Esempi">Esempi</h2>
-
-<p><font><font>La seguente funzione crea tre coppie chiave/valore in local storage, infine le elimina invocando il metodo </font></font><code>clear()</code>.</p>
-
-<pre class="brush: js">function populateStorage() {
- localStorage.setItem('bgcolor', 'red');
- localStorage.setItem('font', 'Helvetica');
- localStorage.setItem('image', 'miGato.png');
-
- localStorage.clear();
-}</pre>
-
-<div class="note">
-<p><strong>Note</strong>: Per un esempio reale guarda <a href="https://mdn.github.io/dom-examples/web-storage/">Web Storage Demo</a>.</p>
-</div>
-
-<h2 id="Specifiche">Specifiche</h2>
-
-<table class="standard-table">
- <tbody>
- <tr>
- <th scope="col">Specifiche</th>
- <th scope="col">Stato</th>
- <th scope="col">Commento</th>
- </tr>
- <tr>
- <td>{{SpecName('HTML WHATWG', 'webstorage.html#dom-storage-clear', 'Storage.clear')}}</td>
- <td>{{Spec2('HTML WHATWG')}}</td>
- <td> </td>
- </tr>
- </tbody>
-</table>
-
-<h2 id="Compatibilità_browser_CompatibilityTable()">Compatibilità browser {{ CompatibilityTable() }}</h2>
-
-<div id="compat-desktop">
-<table class="compat-table">
- <tbody>
- <tr>
- <th>Funzionalità</th>
- <th>Chrome</th>
- <th>Edge</th>
- <th>Firefox (Gecko)</th>
- <th>Internet Explorer</th>
- <th>Opera</th>
- <th>Safari (WebKit)</th>
- </tr>
- <tr>
- <td>localStorage</td>
- <td>4</td>
- <td>{{CompatVersionUnknown}}</td>
- <td>3.5</td>
- <td>8</td>
- <td>10.50</td>
- <td>4</td>
- </tr>
- <tr>
- <td>sessionStorage</td>
- <td>5</td>
- <td>{{CompatUnknown}}</td>
- <td>2</td>
- <td>8</td>
- <td>10.50</td>
- <td>4</td>
- </tr>
- </tbody>
-</table>
-</div>
-
-<div id="compat-mobile">
-<table class="compat-table">
- <tbody>
- <tr>
- <th>Funzionalità</th>
- <th>Android</th>
- <th>Edge</th>
- <th>Firefox Mobile (Gecko)</th>
- <th>IE Phone</th>
- <th>Opera Mobile</th>
- <th>Safari Mobile</th>
- </tr>
- <tr>
- <td>Basic support</td>
- <td>2.1</td>
- <td>{{CompatVersionUnknown}}</td>
- <td>{{ CompatUnknown }}</td>
- <td>8</td>
- <td>11</td>
- <td>iOS 3.2</td>
- </tr>
- </tbody>
-</table>
-</div>
-
-<p>Ogni browser riserva una quantità di memoria differente per localStorage e sessionStorage. Qui si trova <a href="http://dev-test.nemikor.com/web-storage/support-test/" title="http://dev-test.nemikor.com/web-storage/support-test/">il dettaglio di tutte le quantità di memoria per i vari browser</a>.</p>
-
-<div class="note">
-<p><strong>Note: </strong>da iOS 5.1, Safari Mobile persiste i dati di localStorage nella cartella cache, che è soggetta a pulizie occasionali, su ordine del sistema operativo, tipicamente in condizioni di poco spazio libero sul dispositivo.</p>
-</div>
-
-<h2 id="Vedi_anche">Vedi anche</h2>
-
-<p><a href="/en-US/docs/Web/API/Web_Storage_API/Using_the_Web_Storage_API">Utilizzo di Web Storage API</a></p>