---
title: Reflect.deleteProperty()
slug: Web/JavaScript/Reference/Global_Objects/Reflect/deleteProperty
translation_of: Web/JavaScript/Reference/Global_Objects/Reflect/deleteProperty
---
<div>{{JSRef}}</div>

<p>静态方法 <code><strong>Reflect</strong></code><strong><code>.deleteProperty()</code></strong> 允许用于删除属性。它很像 <a href="/en-US/docs/Web/JavaScript/Reference/Operators/delete"><code>delete</code> operator</a> ，但它是一个函数。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">Reflect.deleteProperty(target, propertyKey)
</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt><code>target</code></dt>
 <dd>删除属性的目标对象。</dd>
 <dt><code>propertyKey</code></dt>
 <dd>需要删除的属性的名称。</dd>
</dl>

<h3 id="返回值">返回值</h3>

<p>{{jsxref("Boolean")}} 值表明该属性是否被成功删除。</p>

<h3 id="异常">异常</h3>

<p>抛出一个 {{jsxref("TypeError")}}，如果<code>target</code>不是 {{jsxref("Object")}}。</p>

<h2 id="描述">描述</h2>

<p><code>Reflect.deleteProperty</code> 允许你删除一个对象上的属性。返回一个 {{jsxref("Boolean")}} 值表示该属性是否被成功删除。它几乎与非严格的 <a href="/zh-CN/docs/Web/JavaScript/Reference/Operators/delete"><code>delete</code> operator</a> 相同。</p>

<h2 id="示例">示例</h2>

<h3 id="使用_Reflect.deleteProperty()">使用 <code>Reflect.deleteProperty()</code></h3>

<pre class="brush: js">var obj = { x: 1, y: 2 };
Reflect.deleteProperty(obj, "x"); // true
obj; // { y: 2 }

var arr = [1, 2, 3, 4, 5];
Reflect.deleteProperty(arr, "3"); // true
arr; // [1, 2, 3, , 5]

// 如果属性不存在，返回 true
Reflect.deleteProperty({}, "foo"); // true

// 如果属性不可配置，返回 false
Reflect.deleteProperty(Object.freeze({foo: 1}), "foo"); // 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('ES6', '#sec-reflect.deleteproperty', 'Reflect.deleteProperty')}}</td>
   <td>{{Spec2('ES6')}}</td>
   <td>Initial definition.</td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-reflect.deleteproperty', 'Reflect.deleteProperty')}}</td>
   <td>{{Spec2('ESDraft')}}</td>
   <td></td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

{{Compat}}

<h2 id="相关链接">相关链接</h2>

<ul>
 <li>{{jsxref("Reflect")}}</li>
 <li><a href="/en-US/docs/Web/JavaScript/Reference/Operators/delete"><code>delete</code> operator</a></li>
</ul>