Component Lifecycle in Angular
The component lifecycle in Angular defines the different stages a component goes through from its creation to its destruction.
Synopsis:
In this topic, you will learn about the lifecycle hooksngOnInit
and ngOnDestroy
.
- 1. ngOnInit Hook:
Called after Angular initializes the component's data-bound properties.
- 2. ngOnDestroy Hook:
Called just before Angular destroys the component.
- 3. Constructor:
Executed every time a component instance is created.
- 4. ngOnChanges:
Executed every time an input control's value changes.
- 5. ngAfterViewInit:
Executed when the component's view has been fully initialized.
Purpose:
- Initialize components.
- Release resources before component destruction.
- Manage component state.
Exercises
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