global function
Retrieves the component instance whose view contains the DOM element.
ng.getOwningComponent<T>(elementOrDir: {} | Element): T | null elementOrDir | {} | Element | DOM element, component or directive instance for which to retrieve the root components. |
T | null: Component instance whose view owns the DOM element or null if the element is not part of a component view.
For example, if <child-comp> is used in the template of <app-comp> (i.e. a ViewChild of <app-comp>), calling getOwningComponent on <child-comp> would return <app-comp>.
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https://angular.io/api/core/global/ngGetOwningComponent