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                ## ComponentRef 表示通過ComponentFactory創建的組件的實例。 `ComponentRef`提供對組件實例的訪問以及與此組件實例相關的其他對象,并允許您通過`destroy`方法銷毀組件實例。 ### 類定義 ```typescript class ComponentRef { C location : ElementRef injector : Injector instance : C hostView : ViewRef changeDetectorRef : ChangeDetectorRef componentType : Type<any> destroy() : void onDestroy(callback: Function) : void } ``` ### 屬性 - C - location : `ElementRef` 組件實例的宿主元素所在的位置 - injector : `Injector` 組件實例存在的注射器 - instance : C 組件實例 - hostview : `ViewRef` 組件實例的宿主視圖`ViewRef` - changeDetectorRef : `ChangeDetectorRef` 組件的ChangeDetectorRef - componentType: `Type<any>` 組件類型 - destroy() : `void` 銷毀組件實例及其附加數據 - onDestroy(callback: `Function`) : `void` 允許注冊將在組件銷毀時調用的回調。
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