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---
title: DragEvent.dataTransfer
slug: Web/API/DragEvent/dataTransfer
translation_of: Web/API/DragEvent/dataTransfer
---
<div>{{APIRef("HTML Drag and Drop API")}}</div>
<p><code><strong>DataEvent.dataTransfer</strong></code> 屬性保留了拖曳操作中的資料（指向一個 {{domxref("DataTransfer")}} 物件）。</p>
<p>此屬性為 {{readonlyInline}}。</p>
<h2 id="語法">語法</h2>
<pre class="syntaxbox">var <var>data</var> = <var>dragEvent</var>.dataTransfer;
</pre>
<h3 id="回傳值">回傳值</h3>
<dl>
<dt><code>data</code></dt>
<dd>一個保存 {{domxref("DragEvent")}} 當中資料的 {{domxref("DataTransfer")}} 物件。</dd>
</dl>
<h2 id="範例">範例</h2>
<p>This example illustrates accessing the drag and drop data within the {{event("dragend")}} event handler.</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="規範">規範</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="瀏覽器相容性">瀏覽器相容性</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>
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