angular-tooltip-html/src/app/componentWithContentOrNot/componentWithContentOrNot.c...

import { Component, OnInit, ElementRef, ViewChild, ChangeDetectorRef } from '@angular/core';

@Component({
  selector: 'app-componentWithContentOrNot',
  templateUrl: './componentWithContentOrNot.component.html',
  styleUrls: ['./componentWithContentOrNot.component.css']
})
export class ComponentWithContentOrNotComponent implements OnInit {
	// @ViewChild('content') content: ElementRef;

  constructor(
		private changeDetector: ChangeDetectorRef
	) {}

  ngOnInit() {
	}
	
	hasChildChange(event) {
		this.changeDetector.detectChanges()
	}
}