WindowClient.focused

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句法
范例
规范
浏览器兼容性
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focused 只读特性在 WindowClient 接口是 布尔 that indicates whether the current client has focus.

句法

var myFocused = windowClient.focused;

值

A 布尔 .

范例

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 < clientList.length; i++) {
      var client = clientList[i];
      if (client.url == '/' && 'focus' in client) {
        if(!client.focused)
          return client.focus();
        }
      }
    }
    if (clients.openWindow)
      return clients.openWindow('/');
  }));
});

规范

规范	状态	注释
服务工作者 The definition of 'WindowClient: focused' in that specification.	工作草案	初始定义

浏览器兼容性

The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`focused`	Chrome 42	Edge ≤18	Firefox 44 注意事项 44 注意事项 Extended Support Releases (ESR) before Firefox 78 ESR do not support service workers and the Push API.	IE 不支持 No	Opera ?	Safari 不支持 No	WebView Android 不支持 No	Chrome Android 42	Firefox Android 44	Opera Android ?	Safari iOS 不支持 No	Samsung Internet Android 4.0

图例

完整支持
不支持
兼容性未知 ?
实验。期望将来行为有所改变。

元数据

最后修改： Apr 2, 2020

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句法

值

范例

规范

浏览器兼容性

图例

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