ProvideIn any和root之间有什么区别 [英] What is the difference between providedIn any and root

问题描述

在Angular 9中，可注入装饰器选项providedIn具有一个名为any的新值. root和any有什么区别?

In Angular 9 the injectable decorator option providedIn has a new value called any. What is the difference between root and any?

在使用any的情况下，服务是否被视为单例?

Is a service considered a singleton in the case that I use any?

@Injectable({providedIn: 'any'})
class UsefulService {
}

推荐答案

根据

root:大多数应用程序中的应用程序级注入器.

• root : The application-level injector in most apps.

platform:所有人共享的特殊单例平台注射器 页面上的应用程序.

platform : A special singleton platform injector shared by all applications on the page.

any:获得分辨率的NgModule注射器.

any : The NgModule injector that receives the resolution.

有关更多详细信息，请参阅以下文章.

For more details please refer this article.

在使用any的情况下，服务是否被视为单例? -否

Is a service considered a singleton in the case that I use any? - No

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