---
title: XMLHttpRequest.abort()
slug: Web/API/XMLHttpRequest/abort
tags:
  - XMLHttpRequest
translation_of: Web/API/XMLHttpRequest/abort
---
<p>{{APIRef('XMLHttpRequest')}}</p>

<p>如果该请求已被发出，<strong>XMLHttpRequest.abort()</strong> 方法<span style="cursor: pointer;">将终止该</span>请求。当一个请求被<span style="cursor: pointer;">终止</span>，它的  {{domxref("XMLHttpRequest.readyState", "readyState")}} 将被置为 {{domxref("XMLHttpRequest.UNSENT")}} (0)，并且请求的 {{domxref("XMLHttpRequest.status", "status")}} 置为 0。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox notranslate">xhrInstance.abort();</pre>

<h3 id="参数">参数</h3>

<p>无。</p>

<h3 id="返回值">返回值</h3>

<p><code>undefined</code></p>

<h2 id="示例">示例</h2>

<pre class="brush: js notranslate">var xhr = new XMLHttpRequest(),
    method = "GET",
    url = "https://developer.mozilla.org/";
xhr.open(method, url, true);

xhr.send();

if (OH_NOES_WE_NEED_TO_CANCEL_RIGHT_NOW_OR_ELSE) {
  xhr.abort();
}</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">规范</th>
   <th scope="col">状态</th>
   <th scope="col">注释</th>
  </tr>
  <tr>
   <td>{{SpecName('XMLHttpRequest', '#the-abort()-method')}}</td>
   <td>{{Spec2('XMLHttpRequest')}}</td>
   <td>WHATWG living standard</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<div>{{Compat("api.XMLHttpRequest.abort")}}</div>

<h2 id="相关链接">相关链接</h2>

<ul>
 <li><a href="/zh-CN/docs/Web/API/XMLHttpRequest/Using_XMLHttpRequest">使用 XMLHttpRequest</a></li>
</ul>