OnDestroy
一个生命周期钩子，它会在指令、管道或服务被销毁时调用。 用于在实例被销毁时，执行一些自定义清理代码。
A lifecycle hook that is called when a directive, pipe, or service is destroyed. Use for any custom cleanup that needs to occur when the instance is destroyed.
interface OnDestroy {
ngOnDestroy(): void
}
参见
Lifecycle Hooks guide
方法
一个用于执行清理逻辑的回调方法，会在指令、管道、服务的实例被销毁后立即调用。 A callback method that performs custom clean-up, invoked immediately after a directive, pipe, or service instance is destroyed. |
参数没有参数。 返回值
|
使用说明
下列代码片段展示了组件如何实现该接口，以定义它自己的清理逻辑。
The following snippet shows how a component can implement this interface to define its own custom clean-up method.
@Component({selector: 'my-cmp', template: `...`})
class MyComponent implements OnDestroy {
ngOnDestroy() {
// ...
}
}
