安全上下文
此特征只可用于
安全上下文
(HTTPS)，在某些或所有
支持浏览器
.
tag
只读特性在
Notification
interface signifies an identifying tag for the notification, as specified in the
tag
option of the
Notification()
构造函数。
The idea of notification tags is that more than one notification can share the same tag, linking them together. One notification can then be programmatically replaced with another to avoid the users' screen being filled up with a huge number of similar notifications.
var tag = Notification.tag;
A
DOMString
.
我们的 Using the Notifications API article has a good example of tag usage.
| 规范 | 状态 | 注释 |
|---|---|---|
|
Notifications API
The definition of 'tag' in that specification. |
实时标准 | Living standard |
| 桌面 | 移动 | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
tag
|
Chrome Yes | Edge 14 | Firefox Yes | IE No | Opera Yes | Safari Yes | WebView Android No | Chrome Android Yes | Firefox Android Yes | Opera Android Yes | Safari iOS No | Samsung Internet Android Yes |
完整支持
不支持
Notification