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+---
+title: DataTransfer.getData()
+slug: Web/API/DataTransfer/getData
+translation_of: Web/API/DataTransfer/getData
+---
+<div>
+<p>{{APIRef("HTML DOM")}}</p>
+</div>
+
+<p><strong><code>DataTransfer.getData()</code></strong> 方法接受指定类型的拖放（以{{domxref("DOMString")}}的形式）数据。如果拖放行为没有操作任何数据，会返回一个空字符串。</p>
+
+<p>数据类型有：<code>text/plain</code>，<code>text/uri-list。</code></p>
+
+<h2 id="语法">语法</h2>
+
+<pre class="syntaxbox">DOMString <var>dataTransfer</var>.getData(format);
+</pre>
+
+<h3 id="参数">参数</h3>
+
+<dl>
+ <dt><em>format</em></dt>
+ <dd>{{domxref("DOMString")}}类型</dd>
+</dl>
+
+<h3 id="返回值">返回值</h3>
+
+<dl>
+ <dt>{{domxref("DOMString")}}</dt>
+ <dd>返回一个给定类型的{{domxref("DOMString")}}格式的数据。如果没有操作数据或者没有指定操作数据的类型，都会返回一个空字符串。</dd>
+</dl>
+
+<h3 id="注意">注意</h3>
+
+<p><a href="https://www.w3.org/TR/2011/WD-html5-20110113/dnd.html#drag-data-store-mode">HTML5 拖放规范</a> 规定了一个 <code>drag data store mode</code>。这可能会导致预期外的结果，即 <strong><code>DataTransfer.getData()</code> </strong>没有返回预期值。</p>
+
+<h2 id="示例">示例</h2>
+
+<p>这个例子展示了 {{domxref("DataTransfer")}}对象的{{domxref("DataTransfer.getData()","getData()")}}和{{domxref("DataTransfer.setData()","setData()")}}方法。</p>
+
+<h3 id="HTML">HTML</h3>
+
+<pre class="brush: html">&lt;div id="div1" ondrop="drop(event)" ondragover="allowDrop(event)"&gt;
+    &lt;span id="drag" draggable="true" ondragstart="drag(event)"&gt;drag me to the other box&lt;/span&gt;
+&lt;/div&gt;
+&lt;div id="div2" ondrop="drop(event)" ondragover="allowDrop(event)"&gt;&lt;/div&gt;
+</pre>
+
+<h3 id="CSS">CSS</h3>
+
+<pre class="brush: css">#div1, #div2 {
+    width:100px;
+    height:50px;
+    padding:10px;
+    border:1px solid #aaaaaa;
+}
+</pre>
+
+<h3 id="JavaScript">JavaScript</h3>
+
+<pre class="brush: js">function allowDrop(allowdropevent) {
+    allowdropevent.target.style.color = 'blue';
+    allowdropevent.preventDefault();
+}
+
+function drag(dragevent) {
+    dragevent.dataTransfer.setData("text", dragevent.target.id);
+    dragevent.target.style.color = 'green';
+}
+
+function drop(dropevent) {
+    dropevent.preventDefault();
+    var data = dropevent.dataTransfer.getData("text");
+    dropevent.target.appendChild(document.getElementById(data));
+    document.getElementById("drag").style.color = 'black';
+}
+</pre>
+
+<h3 id="结果">结果</h3>
+
+<p id="EmbedLiveSample('Example'_''_''_''_'WebAPIDataTransfergetData')"><iframe class="live-sample-frame sample-code-frame" frameborder="0" id="frame_Example" src="https://mdn.mozillademos.org/en-US/docs/Web/API/DataTransfer/getData$samples/Example?revision=1539300" width="600"></iframe></p>
+
+<h2 id="说明">说明</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-datatransfer-getdata", "getData()")}}</td>
+   <td>{{Spec2("HTML WHATWG")}}</td>
+   <td></td>
+  </tr>
+  <tr>
+   <td>{{SpecName("HTML5.1", "editing.html#dom-datatransfer-getdata", "getData()")}}</td>
+   <td>{{Spec2("HTML5.1")}}</td>
+   <td>Initial definition</td>
+  </tr>
+ </tbody>
+</table>
+
+<h2 id="兼容性">兼容性</h2>
+
+<p>{{Compat("api.DataTransfer.getData")}}</p>
+
+<h2 id="参考">参考</h2>
+
+<p>{{page("/en-US/docs/Web/API/DataTransfer", "See also")}}</p>