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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>
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