@angular/core

OnChanges

interface

A lifecycle hook that is called when any data-bound property of a directive changes. Define an ngOnChanges() method to handle the changes.

API

Usage Notes

  
    interface OnChanges {}

ngOnChanges

void

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.

@paramchangesSimpleChanges

The changed properties.

@returnsvoid