The ngDoCheck lifecycle hook in Angular allows you to implement custom change detection logic for cases where Angular’s default change detection isn’t sufficient. As the creator of CoreUI with over 11 years of Angular development experience, I use ngDoCheck for components that need to detect changes in complex objects, arrays, or when working with immutable data structures. This hook runs on every change detection cycle, so it requires careful implementation to avoid performance issues.

The ngOnChanges lifecycle hook in Angular is called whenever input properties of a component change. As the creator of CoreUI with over 11 years of Angular development experience, I use ngOnChanges to react to parent component data changes and trigger appropriate responses in child components. This hook provides detailed information about what changed, including previous and current values.