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authorPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:17 -0500
committerPeter Bengtsson <mail@peterbe.com>2020-12-08 14:42:17 -0500
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+---
+title: Infinity
+slug: Web/JavaScript/Reference/Global_Objects/Infinity
+translation_of: Web/JavaScript/Reference/Global_Objects/Infinity
+---
+<div>
+<div>
+<div>{{jsSidebar("Objects")}}</div>
+</div>
+</div>
+
+<h2 id="Summary" name="Summary">Sommario</h2>
+
+<p>La proprietà globale <strong><code>Infinity</code></strong> è un valore numerico che rappresenta l'infinito.</p>
+
+<p>{{js_property_attributes(0,0,0)}}</p>
+
+<h2 id="Syntax" name="Syntax">Sintassi</h2>
+
+<pre class="syntaxbox"><code>Infinity </code></pre>
+
+<h2 id="Description" name="Description">Descrizione</h2>
+
+<p><code>Infinity</code> è una proprietà dell'<em>oggetto globale</em>, ossia una variabile nell'ambito globale.</p>
+
+<p>Il valore iniziale di <code>Infinity</code> è {{jsxref("Number.POSITIVE_INFINITY")}}. Il valore <code>Infinity</code> (infinito positivo) è maggiore di ogni altro numero. Matematicamente questo valore si comporta come l'infinito: per esempio, qualsiasi numero positivo moltipilicato per <code>Infinity</code> è uguale a <code>Infinity</code>, e qualsiasi numero diviso per <code>Infinity</code> è uguale a 0.</p>
+
+<p>Secondo la specifica ECMAScript5, <code>Infinity</code> è accessibile in sola lettura (implementato in JavaScript 1.8.5 / Firefox 4).</p>
+
+<h2 id="Specifiche">Specifiche</h2>
+
+<table class="standard-table">
+ <tbody>
+ <tr>
+ <th scope="col">Specifica</th>
+ <th scope="col">Stato</th>
+ <th scope="col">Commenti</th>
+ </tr>
+ <tr>
+ <td>ECMAScript 1st Edition.</td>
+ <td>Standard</td>
+ <td>Definizione iniziale. Implementato in JavaScript 1.3</td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES5.1', '#sec-15.1.1.2', 'Infinity')}}</td>
+ <td>{{Spec2('ES5.1')}}</td>
+ <td> </td>
+ </tr>
+ <tr>
+ <td>{{SpecName('ES6', '#sec-value-properties-of-the-global-object-infinity', 'Infinity')}}</td>
+ <td>{{Spec2('ES6')}}</td>
+ <td> </td>
+ </tr>
+ </tbody>
+</table>
+
+<h2 id="Compatibilità_con_i_browser">Compatibilità con i browser</h2>
+
+<p>{{ CompatibilityTable() }}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th>Funzionalità</th>
+ <th>Chrome</th>
+ <th>Firefox (Gecko)</th>
+ <th>Internet Explorer</th>
+ <th>Opera</th>
+ <th>Safari</th>
+ </tr>
+ <tr>
+ <td>Supporto di base</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+ <tr>
+ <th><span style="font-family: 'Open Sans Light', sans-serif; font-size: 16px; line-height: 16px;">Funzionalità</span></th>
+ <th>Android</th>
+ <th>Chrome for Android</th>
+ <th>Firefox Mobile (Gecko)</th>
+ <th>IE Mobile</th>
+ <th>Opera Mobile</th>
+ <th>Safari Mobile</th>
+ </tr>
+ <tr>
+ <td><span style="font-size: 12px; line-height: 18px;">Supporto di base</span></td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ <td>{{ CompatVersionUnknown() }}</td>
+ </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="See_also" name="See_also">Vedi anche</h2>
+
+<ul>
+ <li>{{jsxref("Number.NEGATIVE_INFINITY")}}</li>
+ <li>{{jsxref("Number.POSITIVE_INFINITY")}}</li>
+</ul>