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Angular Directives - Coggle Diagram

- - - - declare Input varname="green" for accept inputs from outside
      - Declare Render2 type provide the place holder for rending
      - ElementRef type variable is the hold the element itself
      - HostBinding() can set the any property of the html element
      - HostListener() can register events and bind to the html element
      - this.render.setStyle(this.elRef.nativeElement, "color", "red");