From 33058f2b292b3a581333bdfb21b8f671898c5060 Mon Sep 17 00:00:00 2001
From: Peter Bengtsson <mail@peterbe.com>
Date: Tue, 8 Dec 2020 14:40:17 -0500
Subject: initial commit

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+---
+title: NotificationEvent
+slug: Web/API/NotificationEvent
+translation_of: Web/API/NotificationEvent
+---
+<p>{{APIRef("Web Notifications")}}</p>
+
+<p>传递给 {{domxref("ServiceWorkerGlobalScope.onnotificationclick", "onnotificationclick")}} 处理程序的参数的<code>NotificationEvent</code>接口，该接口表示通知单击事件，该事件在 {{domxref("ServiceWorkerGlobalScope")}} ，{{domxref("ServiceWorker")}} 。</p>
+
+<p>该接口继承自{{domxref("ExtendableEvent")}}接口。</p>
+
+<h2 id="建设者">建设者</h2>
+
+<dl>
+ <dt>{{domxref("NotificationEvent.NotificationEvent","NotificationEvent()")}}</dt>
+ <dd>创建一个新<code>NotificationEvent</code>对象。</dd>
+</dl>
+
+<h2 id="物产">物产</h2>
+
+<p><em>从其祖先{{domxref("Event")}}继承属性</em>。</p>
+
+<dl>
+ <dt>{{domxref("NotificationEvent.notification")}} {{readonlyInline}}</dt>
+ <dd>返回一个{{domxref("Notification")}}对象，该对象表示单击以触发事件的通知。</dd>
+ <dt>{{domxref("NotificationEvent.action")}} {{readonlyinline}}</dt>
+ <dd>返回用户单击的通知按钮的字符串ID。如果用户在除操作按钮之外的其他位置单击了通知，或者该通知没有按钮，则此值返回一个空字符串。</dd>
+</dl>
+
+<h2 id="方法">方法</h2>
+
+<p><em>从其父项</em><em>{{domxref("ExtendableEvent")}}</em><em>继承方法</em>。</p>
+
+<dl>
+ <dt>{{domxref("ExtendableEvent.waitUntil", "ExtendableEvent.waitUntil()")}}</dt>
+ <dd>
+ <p>延长事件的寿命。告诉浏览器工作正在进行中。</p>
+ </dd>
+</dl>
+
+<h2 id="例">例</h2>
+
+<pre class="brush: js notranslate">self.addEventListener('notificationclick', function(event) {
+  console.log('On notification click: ', event.notification.tag);
+  event.notification.close();
+
+  // This looks to see if the current is already open and
+  // focuses if it is
+  event.waitUntil(clients.matchAll({
+    type: "window"
+  }).then(function(clientList) {
+    for (var i = 0; i &lt; clientList.length; i++) {
+      var client = clientList[i];
+      if (client.url == '/' &amp;&amp; 'focus' in client)
+        return client.focus();
+    }
+    if (clients.openWindow)
+      return clients.openWindow('/');
+  }));
+});
+</pre>
+
+<h2 id="技术指标">技术指标</h2>
+
+<table class="standard-table">
+ <thead>
+  <tr>
+   <th scope="col">规范</th>
+   <th scope="col">状态</th>
+   <th scope="col">评论</th>
+  </tr>
+ </thead>
+ <tbody>
+  <tr>
+   <td>{{SpecName('Web Notifications','#notificationevent','NotificationEvent')}}</td>
+   <td>{{Spec2('Web Notifications')}}</td>
+   <td>生活水平。</td>
+  </tr>
+ </tbody>
+</table>
+
+<div class="note">
+<p><strong>注意</strong>：此接口在<a href="/en-US/docs/Web/API/Notifications_API">Notifications API中</a>指定，但是可以通过 {{domxref("ServiceWorkerGlobalScope")}}访问。</p>
+</div>
+
+<h2 id="浏览器兼容性">浏览器兼容性</h2>
+
+<div>
+<div class="hidden">此页面上的兼容性表是根据结构化数据生成的。如果您想贡献数据，请查看<a href="https://github.com/mdn/browser-compat-data">https://github.com/mdn/browser-compat-data</a>并向我们​​发送请求请求。</div>
+
+<p>{{Compat("api.NotificationEvent")}}</p>
+</div>
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