OnChanges
OnChanges
Stable Class
What it does
Lifecycle hook that is called when any data-bound property of a directive changes.
How to use
.
@Component({selector: 'my-cmp', template: `...`})
class MyComponent implements OnChanges {
@Input()
prop: number;
ngOnChanges(changes: SimpleChanges) {
// changes.prop contains the old and the new value...
}
}
Class Overview
class OnChanges {
ngOnChanges(changes: SimpleChanges
