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Angular lifecycle hooks

Updated on 08 July 2021
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virender kumar
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Updated on 08 July 2021
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The description of each lifecycle method is as below,

  1. ngOnChanges: When the value of a data bound property changes, then this method is called.
  2. ngOnInit: This is called whenever the initialization of the directive/component after Angular first displays the data-bound properties happens.
  3. ngDoCheck: This is for the detection and to act on changes that Angular can't or won't detect on its own.
  4. ngAfterContentInit: This is called in response after Angular projects external content into the component's view.
  5. ngAfterContentChecked: This is called in response after Angular checks the content projected into the component.
  6. ngAfterViewInit: This is called in response after Angular initializes the component's views and child views.
  7. ngAfterViewChecked: This is called in response after Angular checks the component's views and child views.
  8. ngOnDestroy: This is the cleanup phase just before Angular destroys the directive/component.


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