ng new pjt
cd pjt
npm install jquery fullcalendar --save

[styles]
"../node_modules/fullcalendar/dist/fullcalendar.min.css"

[scripts]
"../node_modules/jquery/dist/jquery.js",
"../node_modules/moment/min/moment.min.js",
"../node_modules/fullcalendar/dist/fullcalendar.min.js"

import * as jQuery from "jquery";
(window as any).$ = (window as any).jQuery = jQuery;

<div id='calendar'></div>
<div id="test" (click)="Clicked()" hidden="true"></div>

import 'fullcalendar';
declare let $:any;

@Component({...})
export class AppComponent {
...

  ngOnInit(){
    $('#calendar').fullCalendar({

      dayClick: function(date, jsEvent, view) {

          //alert('Clicked on: ' + date.format());
          $(this).css('background-color', 'red');

  ***** WANT A BETTER WAY TO CALL NG CLICKED() FUNCTION HERE TO REPLACE THE FOLLOWING 2 LINES *****
          document.getElementById("test").innerText = date.format();
          document.getElementById("test").click();
      }
    });

    $('#calendar').fullCalendar('changeView', 'agendaDay');
  }

  Clicked() {
    alert("Alert from ng func");
  }
}