In Angular 2 components life-cycle, there are several
events occur to complete this life-cycle.
Components Life-cycle events
Events
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Description
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ngOnChanges
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Before Ng on init event, the data-bound input property value
changes.
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ngOnInit
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After the first ngOnChanges event, the ngOnInit event fire.
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ngDoCheck
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During every Angular change detection cycle ngDoCheck event fire.
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ngAfterContentInit
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After projecting content into the component ngAfterContentInit event
fire.
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ngAfterContentChecked
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After every check of projected component content the ngAfterContentChecked
event fire.
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ngAfterViewInit
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After initializing the component's views and child views the ngAfterViewInit
event fire.
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ngAfterViewChecked
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After every check of the component's views and child views the ngAfterViewChecked
event fire.
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ngOnDestroy
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Just before Angular destroys the directive or component the ngOnDestroy
event fire.
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