---
title: document.mozFullScreenEnabled
slug: Web/API/Document/fullscreenEnabled
translation_of: Web/API/Document/fullscreenEnabled
original_slug: Web/API/Document/mozFullScreenEnabled
---
<p>{{ ApiRef() }}</p>
<h3 id="Summary" name="Summary">概述</h3>
<p>返回一个布尔值,表明浏览器是否支持全屏模式. 全屏模式只在那些不包含窗口化的插件的页面中可用.对于一个{{ HTMLElement("iframe") }}元素中的页面,则它必需拥有{{ HTMLAttrXRef("mozallowfullscreen", "iframe") }}属性.</p>
<h3 id="Syntax" name="Syntax">语法</h3>
<pre class="eval"><em>var isFullScreenAvailable</em> = <em>document</em>.mozFullScreenEnabled;
</pre>
<p>如果当前文档可以进入全屏模式,则<code>isFullScreenAvailable</code>为<code>true</code></p>
<h3 id="Example" name="Example">例子</h3>
<pre class="eval">function requestFullScreen() {
  if (document.mozFullScreenEnabled) {
    videoElement.requestFullScreen();
  } else {
    console.log('你的浏览器不支持全屏模式!');
  }
}
</pre>
<h3 id="备注">备注</h3>
<p>进入页面<a href="/zh-cn/DOM/Using_full-screen_mode" title="zh-cn/DOM/Using full-screen mode">使用全屏模式</a>查看详情和示例.</p>
<h3 id="Specification" name="Specification">浏览器兼容性</h3>
<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>{{ CompatUnknown() }}</td>
    <td>{{ CompatGeckoDesktop("10.0") }}</td>
    <td>{{ CompatUnknown() }}</td>
    <td>{{ CompatUnknown() }}</td>
    <td>{{ CompatUnknown() }}</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>{{ CompatUnknown() }}</td>
    <td>{{ CompatGeckoMobile("10.0") }}</td>
    <td>{{ CompatUnknown() }}</td>
    <td>{{ CompatUnknown() }}</td>
    <td>{{ CompatUnknown() }}</td>
   </tr>
  </tbody>
 </table>
</div>
<h3 id="Specification" name="Specification">规范</h3>
<p>该方法在规范草案 <a class="external" href="http://dvcs.w3.org/hg/fullscrezh-cn/raw-file/tip/Overview.html#dom-document-fullscreenenabled" title="http://dvcs.w3.org/hg/fullscrezh-cn/raw-file/tip/Overview.html#dom-document-fullscreenenabled">http://dvcs.w3.org/hg/fullscrezh-cn/raw-file/tip/Overview.html#dom-document-fullscreenenabled</a> 中被提出.</p>
<h3 id="相关链接">相关链接</h3>
<ul>
 <li><a href="/zh-cn/DOM/Using_full-screen_mode" title="zh-cn/DOM/Using full-screen mode">Using full-screen mode</a></li>
 <li>{{ domxref("element.mozRequestFullScreen()") }}</li>
 <li>{{ domxref("document.mozCancelFullScreen()") }}</li>
 <li>{{ domxref("document.mozFullScreen") }}</li>
 <li>{{ domxref("document.mozFullScreenElement") }}</li>
 <li>{{ cssxref(":-moz-full-screen") }}</li>
 <li>{{ HTMLAttrXRef("mozallowfullscreen", "iframe") }}</li>
</ul>
<p>{{ languages( { "en": "en/DOM/document.mozFullScreenEnabled" } ) }}</p>