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---
title: fullscreenchange
slug: Web/API/Document/fullscreenchange_event
translation_of: Web/API/Document/fullscreenchange_event
---
<p>fullscreenchange事件当浏览器进入或离开全屏时触发.</p>
<h2 id="General_info">General info</h2>
<dl>
<dt style="float: left; text-align: right; width: 120px;">Specification</dt>
<dd style="margin: 0 0 0 120px;"><a class="external" href="https://dvcs.w3.org/hg/fullscreen/raw-file/tip/Overview.html#api">Fullscreen</a></dd>
<dt style="float: left; text-align: right; width: 120px;">Interface</dt>
<dd style="margin: 0 0 0 120px;">Event</dd>
<dt style="float: left; text-align: right; width: 120px;">Bubbles</dt>
<dd style="margin: 0 0 0 120px;">Yes</dd>
<dt style="float: left; text-align: right; width: 120px;">Cancelable</dt>
<dd style="margin: 0 0 0 120px;">No</dd>
<dt style="float: left; text-align: right; width: 120px;">Target</dt>
<dd style="margin: 0 0 0 120px;">Document</dd>
<dt style="float: left; text-align: right; width: 120px;">Default Action</dt>
<dd style="margin: 0 0 0 120px;">None</dd>
</dl>
<h2 id="Properties">Properties</h2>
<table class="standard-table">
<thead>
<tr>
<th scope="col">Property</th>
<th scope="col">Type</th>
<th scope="col">Description</th>
</tr>
</thead>
<tbody>
<tr>
<td><code>target</code> {{readonlyInline}}</td>
<td>{{domxref("EventTarget")}}</td>
<td>The event target (the topmost target in the DOM tree).</td>
</tr>
<tr>
<td><code>type</code> {{readonlyInline}}</td>
<td>{{domxref("DOMString")}}</td>
<td>The type of event.</td>
</tr>
<tr>
<td><code>bubbles</code> {{readonlyInline}}</td>
<td>{{jsxref("Boolean")}}</td>
<td>Whether the event normally bubbles or not.</td>
</tr>
<tr>
<td><code>cancelable</code> {{readonlyInline}}</td>
<td>{{jsxref("Boolean")}}</td>
<td>Whether the event is cancellable or not.</td>
</tr>
</tbody>
</table>
<h2 id="Example">Example</h2>
<pre class="brush:js;">// Note that the API is still vendor-prefixed in browsers implementing it
document.addEventListener("fullscreenchange", function( event ) {
// The event object doesn't carry information about the fullscreen state of the browser,
// but it is possible to retrieve it through the fullscreen API
if ( document.fullscreenElement !== null ) {
// The target of the event is always the document,
// but it is possible to retrieve the fullscreen element through the API
document.fullscreenElement;
}
});</pre>
<h2 id="Related_Events">Related Events</h2>
<ul>
<li><a href="/en-US/docs/Mozilla_event_reference/fullscreenerror"><code>fullscreenerror</code></a></li>
</ul>
<h2 id="See_also">See also</h2>
<ul>
<li><a href="/en-US/docs/DOM/Using_full-screen_mode">Using fullscreen mode</a></li>
</ul>
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