Angular 2 Components Life cycle

In Angular 2 components life-cycle, there are several events occur to complete this life-cycle.

Components Life-cycle events

Events	Description
ngOnChanges	Before Ng on init event, the data-bound input property value changes.
ngOnInit	After the first ngOnChanges event, the ngOnInit event fire.
ngDoCheck	During every Angular change detection cycle ngDoCheck event fire.
ngAfterContentInit	After projecting content into the component ngAfterContentInit event fire.
ngAfterContentChecked	After every check of projected component content the ngAfterContentChecked event fire.

ngAfterViewInit	After initializing the component's views and child views the ngAfterViewInit event fire.
ngAfterViewChecked	After every check of the component's views and child views the ngAfterViewChecked event fire.
ngOnDestroy	Just before Angular destroys the directive or component the ngOnDestroy event fire.

For more detail, you can go below links

https://angular.io/docs/ts/latest/guide/lifecycle-hooks.html

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