A callback method that is invoked immediately after the
default change detector has checked data-bound properties
if at least one has changed, and before the view and content
children are checked.
Parameters
changes: {[propName:string]:SimpleChange<any>}
The changed properties.
Returns void
ngOnDestroy
ngOnDestroy():void
A callback method that performs custom clean-up, invoked immediately
before a directive, pipe, or service instance is destroyed.
A callback method that is invoked immediately after the default change detector has checked data-bound properties if at least one has changed, and before the view and content children are checked.