How Access Between Angular

• From Parent to access child component
• @ViewChild()
• Pass Data between child and parent component
• @Input() 
• data from parent to child
• @Input() item = ''; // decorate the property with @Input()
• Directive From Parent Component
• <app-item-detail [item]="currentItem"></app-item-detail>
• @Output()
• data from child to parent with the help of the event.
• to raise event must have EventEmitter