Notification.onerror
Summary
Notification 接口的 onerror 属性指定一个事件侦听器来接收 error (en-US) 事件。
当一个 Notification 发生错误时，会发生这些事件（在许多情况下，一个错误阻止显示通知）。
Syntax
Notification.onerror = EventListener;
Value
A function which serves as the event handler for the error (en-US) event. When an error occurs, the specified function will be called. If null, no error handler is in effect.
规范
| Specification |
|---|
| Notifications API Standard # dom-notification-onerror |
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