how to reload component in same window in angular 7 code example

Example 1: angular reload component

reloadCurrentRoute() {
    let currentUrl = this.router.url;
    this.router.navigateByUrl('/', {skipLocationChange: true}).then(() => {
        this.router.navigate([currentUrl]);
    });
}

Example 2: how to make a component reload in angular

DeleteEmployee(id:number)
  {
    this.employeeService.deleteEmployee(id)
    .subscribe( 
      (data) =>{
        console.log(data);
        this.ngOnInit();
      }),
      err => {
        console.log("Error");
      }   
  }