Angular有必要退订this.activatedRoute订阅 [英] Angular is it necessary to unsubscribe from this.activatedRoute subscriptions

问题描述

我的代码:

ngOnInit() {

  this.activatedRoute.params.subscribe((params: Params) => {
    // do stuff
  })

  this.activatedRoute.data.subscribe((data: any) => {
    // do stuff
  })

}

我的问题是...我需要在ngOnDestroy中取消订阅吗?

My question is ... do I need to unsubscribe from these in ngOnDestroy?

出于习惯，我总是退缩，但不确定在这里是否有必要.

As a matter of habit I always unsub but not sure if it is necessary here.

谢谢

推荐答案

不，您不需要取消订阅可观测路线

No, you don't need to unsubscribe from route observables

从> 文档

订阅组件中的可观察对象时，您几乎总是安排在组件销毁时退订.

When subscribing to an observable in a component, you almost always arrange to unsubscribe when the component is destroyed.

有一些不需要观察的例外观察点.可观察到的ActivatedRoute除外.

There are a few exceptional observables where this is not necessary. The ActivatedRoute observables are among the exceptions.

ActivatedRoute及其可观察物与路由器绝缘本身.当路由组件不再存在时，它会销毁它需要，注入的ActivatedRoute随之死亡.

The ActivatedRoute and its observables are insulated from the Router itself. The Router destroys a routed component when it is no longer needed and the injected ActivatedRoute dies with it.

随时可以退订.它是无害的，从不坏练习.

Feel free to unsubscribe anyway. It is harmless and never a bad practice.

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