user.service.ts:
get返回的Observable,一旦被调用subscribe后,会触发tap操作,取出user detail:
![](https://img.laitimes.com/img/__Qf2AjLwojIjJCLyojI0JCLicmbw5SY0Y2N1EmZ5MWN5ATNkZjYiFjZ0UzY0UmZiR2N5UTMh9CX5d2bs92Yl1iclB3bsVmdlR2LcNWaw9CXt92Yu4GZjlGbh5yYjV3Lc9CX6MHc0RHaiojIsJye.png)
cb是callback,执行subscribe,将值泵入callback:
callback的实现:使用userId调用this.store.dispatch(new UserAction.LoadUserDetail(userId))
user.service.ts:
get返回的Observable,一旦被调用subscribe后,会触发tap操作,取出user detail:
cb是callback,执行subscribe,将值泵入callback:
callback的实现:使用userId调用this.store.dispatch(new UserAction.LoadUserDetail(userId))