---
title: DragEvent.dataTransfer
slug: Web/API/DragEvent/dataTransfer
translation_of: Web/API/DragEvent/dataTransfer
---
<div>{{APIRef("HTML Drag and Drop API")}}</div>

<div> </div>

<p><code><strong>DataEvent.dataTransfer</strong></code> 属性保存着拖拽操作中的数据（作为一个DataTransfer对象）</p>

<p>This property is {{readonlyInline}}.</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">var <var>data</var> = <var>dragEvent</var>.dataTransfer;
</pre>

<h3 id="返回值">返回值</h3>

<dl>
 <dt><code>data</code></dt>
 <dd>{{domxref("DataTransfer")}} 对象包含着 {{domxref("DragEvent","drag event's data")}}.</dd>
</dl>

<h2 id="示例">示例</h2>

<p>这个例子展示了在{{event("dragend")}} 事件处理程序中获取拖拽中数据的方式。</p>

<pre class="brush: js">function process_data(d) {
   // Process the data ...
}

dragTarget.addEventListener("dragend", function(ev) {
   // Call the drag and drop data processor
   if (ev.dataTransfer != null) process_data(ev.dataTransfer);
 }, false);
</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">Specification</th>
   <th scope="col">Status</th>
   <th scope="col">Comment</th>
  </tr>
  <tr>
   <td>{{SpecName("HTML WHATWG", "interaction.html#dom-dragevent-datatransfer", "DragEvent.dataTransfer")}}</td>
   <td>{{Spec2("HTML WHATWG")}}</td>
   <td> </td>
  </tr>
  <tr>
   <td>{{SpecName("HTML5.1", "editing.html#dom-dragevent-datatransfer", "DragEvent.dataTransfer")}}</td>
   <td>{{Spec2("HTML5.1")}}</td>
   <td>Initial definition</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

<p>{{CompatibilityTable}}</p>

<div id="compat-desktop">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Chrome</th>
   <th>Edge</th>
   <th>Firefox (Gecko)</th>
   <th>Internet Explorer</th>
   <th>Opera</th>
   <th>Safari (WebKit)</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>4</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatGeckoDesktop("1.9.1")}}</td>
   <td>10</td>
   <td>12</td>
   <td>3.1</td>
  </tr>
 </tbody>
</table>
</div>

<div id="compat-mobile">
<table class="compat-table">
 <tbody>
  <tr>
   <th>Feature</th>
   <th>Android</th>
   <th>Android Webview</th>
   <th>Chrome for Android</th>
   <th>Edge</th>
   <th>Firefox Mobile (Gecko)</th>
   <th>Firefox OS</th>
   <th>IE Mobile</th>
   <th>Opera Mobile</th>
   <th>Safari Mobile</th>
  </tr>
  <tr>
   <td>Basic support</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatVersionUnknown}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatIE("10")}}</td>
   <td>{{CompatNo}}</td>
   <td>{{CompatNo}}</td>
  </tr>
 </tbody>
</table>
</div>