---
title: Promise.reject()
slug: Web/JavaScript/Reference/Global_Objects/Promise/reject
tags:
  - ECAMScript 2015
  - JavaScript
  - Method
  - Promise
translation_of: Web/JavaScript/Reference/Global_Objects/Promise/reject
---
<div>{{JSRef}}</div>

<p><code><strong>Promise.reject()</strong></code>方法返回一个带有拒绝原因的<code>Promise</code>对象。</p>

<p>{{EmbedInteractiveExample("pages/js/promise-reject.html")}}</p>

<h2 id="Syntax" name="Syntax">语法</h2>

<pre class="syntaxbox"><var>Promise.reject(reason)</var>;</pre>

<h3 id="参数">参数</h3>

<dl>
 <dt>reason</dt>
 <dd>表示<code>Promise</code>被拒绝的原因。</dd>
</dl>

<h3 id="返回值">返回值</h3>

<dl>
 <dd>一个给定原因了的被拒绝的 {{jsxref("Promise")}}。</dd>
</dl>

<h2 id="Description" name="Description">描述</h2>

<p>静态函数<code>Promise.reject</code>返回一个被拒绝的<code>Promise对象</code>。通过使用{{jsxref("Error")}}的实例获取错误原因<code>reason</code>对调试和选择性错误捕捉很有帮助。</p>

<h2 id="示例">示例</h2>

<h3 id="使用静态Promise.reject方法">使用静态<code>Promise.reject()</code>方法</h3>

<pre><code>Promise.reject(new Error('fail')).then(function() {
  // not called
}, function(error) {
  console.error(error); // Stacktrace
});</code></pre>

<h2 id="规范">规范</h2>

<table class="standard-table">
 <tbody>
  <tr>
   <th scope="col">规范</th>
   <th scope="col">状态</th>
   <th scope="col">备注</th>
  </tr>
  <tr>
   <td>{{SpecName('ES2015', '#sec-promise.reject', 'Promise.reject')}}</td>
   <td>{{Spec2('ES2015')}}</td>
   <td>ECMA规范的首次定义</td>
  </tr>
  <tr>
   <td>{{SpecName('ESDraft', '#sec-promise.reject', 'Promise.reject')}}</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>

<p>{{Compat("javascript.builtins.Promise.reject")}}</p>

<h2 id="参见">参见</h2>

<ul>
 <li>{{jsxref("Promise")}}</li>
</ul>