是否可以在一个页面中多次运行一个Angular 2应用程序? [英] Is it possible to run one Angular 2 app several times in one page?

问题描述

我正在从asp.net Web表单迁移到Angular4.我正在逐步进行迁移.更换零件并将其投入生产.我在页面中多次加载相同的Angular应用时遇到问题.例如代码

I'm making migration from asp.net web forms to Angular 4. I'm making it step by step. Replacing one part and placing it in production. I face a problem with loading same Angular app several times in page. For example with code

<root tag="table-ep-component" data="5800"></root>
<root tag="table-ep-component" data="3333"></root>

页面中只有一个已加载的应用程序-第一个.我怎样才能使它们同时工作?欢迎任何建议

there is only one loaded app in the page - the first one. How can I make them work both? Any suggestions are welcome

推荐答案

您可以使用Applicationref.bootstrap方法使其正常工作:

You can use Applicationref.bootstrap method to do it working:

abstract bootstrap<C>(
  componentFactory: ComponentFactory<C>|Type<C>,
  rootSelectorOrNode?: string|any): ComponentRef<C>;

如我们所见，该方法可以采用rootSelectorOrNode参数，因此我们可以将同一组件自举两次.

As we can see this method can take rootSelectorOrNode parameter so we can bootstrap the same component twice.

ngDoBootstrap方法可以帮助我们手动引导应用程序:

ngDoBootstrap method on your root @NgModule can help us to manually bootstrap our application:

@NgModule({
   declarations: [AppComponent],
   imports: [BrowserModule], 
   entryComponents: [AppComponent]
})
export class MenuModule {
   ngDoBootstrap(appRef: ApplicationRef) {
     const rootElements = document.queryselectorAll('root');
     // cast due to https://github.com/Microsoft/TypeScript/issues/4947
     for (const element of rootElements as any as HTMLElement[]){
       appRef.bootstrap(AppComponent, element);
     }
   }
}

另请参阅:

• Angular 2独立组件
• 更改根模块之间的共享数据
• 获取引导程序组件

• Angular 2 stand alone components
• Changing shared data between root modules
• Get bootstraped component

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