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---
title: loadend
slug: Web/Events/loadend
translation_of: Web/API/XMLHttpRequest/loadend_event
---
<p>loadend事件总是在一个资源的加载进度停止之后被触发 (例如，在已经触发“error”，“abort”或“load”事件之后)。这适用于 {{domxref("XMLHttpRequest")}}调用, 以及{{htmlelement("img")}}或{{htmlelement("video")}}之类元素的内容。</p>
<h2 id="General_info">General info</h2>
<dl>
<dt style="float: left; text-align: right; width: 120px;">规范</dt>
<dd style="margin: 0 0 0 120px;"><a class="external" href="http://www.w3.org/TR/progress-events/">Progress</a></dd>
<dt style="float: left; text-align: right; width: 120px;">接口</dt>
<dd style="margin: 0 0 0 120px;">ProgressEvent</dd>
<dt style="float: left; text-align: right; width: 120px;">可冒泡</dt>
<dd style="margin: 0 0 0 120px;">否</dd>
<dt style="float: left; text-align: right; width: 120px;">可取消</dt>
<dd style="margin: 0 0 0 120px;">否</dd>
<dt style="float: left; text-align: right; width: 120px;">触发对象</dt>
<dd style="margin: 0 0 0 120px;">例如{{domxref("HTMLImageElement")}}</dd>
<dt style="float: left; text-align: right; width: 120px;">默认行为</dt>
<dd style="margin: 0 0 0 120px;">无</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>
<tr>
<td><code>lengthComputable </code>{{readonlyInline}}</td>
<td>{{jsxref("Boolean")}}</td>
<td>Specifies whether or not the total size of the transfer is known. Read only.</td>
</tr>
<tr>
<td><code>loaded</code> {{readonlyInline}}</td>
<td>unsigned long (long)</td>
<td>The number of bytes transferred since the beginning of the operation. This doesn't include headers and other overhead, but only the content itself. Read only.</td>
</tr>
<tr>
<td><code>total</code> {{readonlyInline}}</td>
<td>unsigned long (long)</td>
<td>The total number of bytes of content that will be transferred during the operation. If the total size is unknown, this value is zero. Read only.</td>
</tr>
</tbody>
</table>
<h2 id="Related_Events">Related Events</h2>
<ul>
<li>{{event("loadstart")}}</li>
<li>{{event("progress")}}</li>
<li>{{event("error")}}</li>
<li>{{event("abort")}}</li>
<li>{{event("load")}}</li>
<li>{{event("loadend")}}</li>
</ul>
<h2 id="See_also">See also</h2>
<ul>
<li><a href="/en-US/docs/DOM/XMLHttpRequest/Using_XMLHttpRequest#Monitoring_progress" title="/en-US/docs/DOM/XMLHttpRequest/Using_XMLHttpRequest">Monitoring progress</a></li>
</ul>
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