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+---
+title: Window.matchMedia()
+slug: Web/API/Window/matchMedia
+translation_of: Web/API/Window/matchMedia
+---
+<h2 id="Summary" name="Summary">Sommario</h2>
+
+<p>Restituisce un nuovo oggetto {{domxref("MediaQueryList")}} che rappresenta i risultati dell'anaisi effettuta in base alla  stringa <a href="/en-US/docs/CSS/Media_queries" title="CSS/Media queries">media query</a> specificata.</p>
+
+<h2 id="Syntax" name="Syntax">Sintassi</h2>
+
+<pre class="syntaxbox"><em>mql</em> = window.matchMedia(<em>mediaQueryString</em>)</pre>
+
+<p><code>dove QueryString</code> è una stringa che rappresenta la ricerca media query per la quale restituire il nuovo oggetto {{domxref("MediaQueryList")}} .</p>
+
+<h2 id="Example" name="Example">Esempio</h2>
+
+<pre class="brush: js">if (window.matchMedia("(min-width: 400px)").matches) {
+  /* the viewport is at least 400 pixels wide */
+} else {
+  /* the viewport is less than 400 pixels wide */
+}</pre>
+
+<p>Questo codice permette di gestire la pagina in modo diverso quando la finestra è molto piccola.</p>
+
+<p>Vedere <a href="/en-US/docs/DOM/Using_media_queries_from_code" title="CSS/Using media queries from code">Using media queries from code</a> per altri esempi.</p>
+
+<h2 id="Browser_compatibility" name="Browser_compatibility">Compatibilità browser</h2>
+
+<p>{{CompatibilityTable()}}</p>
+
+<div id="compat-desktop">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Chrome</th>
+   <th>Firefox (Gecko)</th>
+   <th>Internet Explorer</th>
+   <th>Opera</th>
+   <th>Safari</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>9</td>
+   <td>{{CompatGeckoDesktop("6.0")}}</td>
+   <td>10</td>
+   <td>12.1</td>
+   <td>5.1</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<div id="compat-mobile">
+<table class="compat-table">
+ <tbody>
+  <tr>
+   <th>Feature</th>
+   <th>Android</th>
+   <th>Firefox Mobile (Gecko)</th>
+   <th>IE Mobile</th>
+   <th>Opera Mobile</th>
+   <th>Safari Mobile</th>
+  </tr>
+  <tr>
+   <td>Basic support</td>
+   <td>3.0</td>
+   <td>{{CompatGeckoMobile("6.0")}}</td>
+   <td>{{CompatNo}}</td>
+   <td>12.1</td>
+   <td>5</td>
+  </tr>
+ </tbody>
+</table>
+</div>
+
+<h2 id="Specification" name="Specification">Specifica</h2>
+
+<ul>
+ <li><a class="external" href="http://dev.w3.org/csswg/cssom-view/#the-mediaquerylist-interface">The CSSOM View Module: The MediaQueryList Interface</a></li>
+</ul>
+
+<h2 id="See_also" name="See_also">Vedere anche</h2>
+
+<ul>
+ <li><a href="/en-US/docs/CSS/Media_queries" title="CSS/Media queries">Media queries</a></li>
+ <li><a href="/en-US/docs/DOM/Using_media_queries_from_code" title="CSS/Using media queries from code">Using media queries from code</a></li>
+ <li>{{domxref("MediaQueryList")}}</li>
+ <li>{{domxref("MediaQueryListListener")}}</li>
+</ul>