lifeCycle

1. ngOnChange

   Called after a bound Input Property (@Input()) changes

2. ngOnInit

   Called once the component is initializated, after the constructor

3. ngDoCheck

   Called during every change detection runs

4. ngAfterContentInit

   Call after contect(ng-content) has been projected into view

5. ngAfterContentChecked

   Call every time the project content(ng-content) has been checked

6. ngAfterViewInit

   Call after the view of component (and its children) has been initializated

7. ngOnDestroy

   Call once the component is about to destroy