---
title: Notification.badge
slug: Web/API/notification/badge
tags:
  - Notification
  - Notification badge
  - Notifications API
  - Web API
translation_of: Web/API/Notification/badge
---
<p>{{SeeCompatTable}}{{APIRef("Notifications API")}}</p>

<p>当没有足够的空间来显示通知本身时，{{domxref("Notification")}}接口的 <strong><code>badge</code></strong> 属性返回用于表示通知的图像URL。</p>

<h2 id="语法">语法</h2>

<pre class="syntaxbox">var <em>url</em> = Notification.<em>badge</em></pre>

<h3 id="值">值</h3>

<p>包含一个URL的 {{domxref('USVString')}} 。</p>

<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">说明</th>
  </tr>
  <tr>
   <td>{{SpecName('Web Notifications','#dom-notification-badge','badge')}}</td>
   <td>{{Spec2('Web Notifications')}}</td>
   <td>Initial definition.</td>
  </tr>
 </tbody>
</table>

<h2 id="浏览器兼容性">浏览器兼容性</h2>

{{Compat("api.Notification.badge")}}