---
title: event.defaultPrevented
slug: Web/API/Event/defaultPrevented
tags:
  - API
  - DOM
  - Event
  - Property
translation_of: Web/API/Event/defaultPrevented
---
<p>{{ APIRef("DOM") }}</p>

<h2 id="概述">概述</h2>

<p>返回一个布尔值，表明当前事件是否调用了 {{ domxref("event.preventDefault()") }}方法。</p>

<div class="note"><strong>注意:</strong>你应该使用该属性来代替以前的非标准的已经被废弃的<code>getPreventDefault()</code>方法 (查看{{ bug("691151") }}).</div>

<h2 id="语法">语法</h2>

<pre class="eval">bool = event.defaultPrevented
</pre>

<h2 id="示例">示例</h2>

<pre class="brush: js"> if (e.defaultPrevented) {
   /* 事件的默认动作已被取消*/
 }
</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <thead>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
 </thead>
 <tbody>
  <tr>
   <td>{{SpecName('DOM WHATWG', '#dom-event-defaultprevented', 'Event.defaultPrevented()')}}</td>
   <td>{{ Spec2('DOM WHATWG') }}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容">浏览器兼容</h2>



<p>{{Compat("api.Event.defaultPrevented")}}</p>