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---
title: Window.visualViewport
slug: Web/API/Window/visualViewport
translation_of: Web/API/Window/visualViewport
---
<p>{{SeeCompatTable}}{{APIRef("Visual Viewport")}}</p>
<p> </p>
<p>{{domxref("Window")}} 接口的visualViewport只读属性返回一个{{domxref("VisualViewport")}}对象，该对象表示给定窗口的可视视口。</p>
<h2 id="语法">语法</h2>
<pre class="syntaxbox">var <em>visualViewport</em> = Window.visualViewport</pre>
<h3 id="值">值</h3>
<p>一个 {{domxref("VisualViewport")}} 对象。</p>
<h2 id="规范">规范</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('Visual Viewport','#dom-window-visualviewport','visualViewport')}}</td>
<td>{{Spec2('Visual Viewport')}}</td>
<td>Initial definition.</td>
</tr>
</tbody>
</table>
<h2 id="浏览器兼容性">浏览器兼容性</h2>
<div>{{CompatibilityTable}}</div>
<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 (WebKit)</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatChrome(60)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatOpera(47)}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
<div id="compat-mobile">
<table class="compat-table">
<tbody>
<tr>
<th>Feature</th>
<th>Android Webview</th>
<th>Chrome for Android</th>
<th>Firefox Mobile (Gecko)</th>
<th>Firefox OS</th>
<th>IE Mobile</th>
<th>Opera Mobile</th>
<th>Safari Mobile</th>
</tr>
<tr>
<td>Basic support</td>
<td>{{CompatChrome(60)}}</td>
<td>{{CompatChrome(60)}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatUnknown}}</td>
<td>{{CompatOperaMobile(47)}}</td>
<td>{{CompatUnknown}}</td>
</tr>
</tbody>
</table>
</div>
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