---
title: FormData.delete()
slug: Web/API/FormData/删除
tags:
  - 删除
translation_of: Web/API/FormData/delete
---
<p>{{APIRef("XMLHttpRequest")}}</p>

<p>{{domxref("FormData")}} 接口的 <code><strong>delete()</strong></code> 方法会从 <code>FormData</code> 对象中删除指定键，即 key，和它对应的值，即 value。</p>

<div class="note">
<p><strong>Note</strong>: 此方法可用于 <a href="/zh-CN/docs/Web/API/Web_Workers_API">Web Workers</a>。</p>
</div>

<h2 id="语法">语法</h2>

<pre class="brush: js">formData.delete(name);</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt><code>name</code></dt>
 <dd>要删除的键（Key）的名字。</dd>
</dl>

<h3 id="返回">返回</h3>

<p>空。</p>

<h2 id="例子">例子</h2>

<p>以下代码将会创建一个空的 <code>FormData</code> 对象， 并且从指定的表单中获取键值对：</p>

<pre class="brush: js">var formData = new FormData(myForm);</pre>

<p>你可以通过 <code>delete()</code> 方法来删除键值对：</p>

<pre class="brush: js">formData.delete('username');</pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">说明</th>
   <th scope="col">状态</th>
   <th scope="col">备注</th>
  </tr>
  <tr>
   <td>{{SpecName('XMLHttpRequest','#dom-formdata-delete','delete()')}}</td>
   <td>{{Spec2('XMLHttpRequest')}}</td>
   <td> </td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>



<p>{{Compat("api.FormData.delete")}}</p>

<h2 id="参见">参见</h2>

<ul>
 <li>{{domxref("XMLHTTPRequest")}}</li>
 <li><a href="/en-US/docs/DOM/XMLHttpRequest/Using_XMLHttpRequest" title="Using XMLHttpRequest">Using XMLHttpRequest</a></li>
 <li><a href="/en-US/docs/DOM/XMLHttpRequest/FormData/Using_FormData_Objects" title="DOM/XMLHttpRequest/FormData/Using_FormData_objects">Using FormData objects</a></li>
 <li>{{HTMLElement("Form")}}</li>
</ul>