NG2- Press escape close - the popup / Do coustom function

NG2- Press escape close - the popup / Do custom function
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import{  Component,HostListener } from '@angular/core'

@Component({
  selector: 'my-app',
 template: 'my-app.html"
 })
export class myapp {

 keyboardEvent: any;
 @HostListener('window:keydown', ['$event'])
   keyboardInput(event: any) {
this.keyboardEvent = event;
 if (event.keyCode == 27){
console.log("Esc Key press to clsoe current popup");

 }
}
  /* a few examples */
  keyboardEvent: any;
  altKey: boolean;
  charCode: number;
  code: string;
  ctrlKey: boolean;
  keyCode: number;
  keyIdentifier: string;
  metaKey: boolean;
  shiftKey: boolean;
  timeStamp: number;
  type: string;
  which: number;
  
  @HostListener('window:keydown', ['$event'])
  keyboardInput(event: any) {
    event.preventDefault();
    event.stopPropagation();
    
    this.keyboardEvent = event;
    this.altKey = event.altKey;
    this.charCode = event.charCode;
    this.code = event.code;
    this.ctrlKey = event.ctrlKey;
    this.keyCode = event.keyCode;
    this.keyIdentifier = event.keyIdentifier;
    this.metaKey = event.metaKey;
    this.shiftKey = event.shiftKey;
    this.timeStamp = event.timeStamp;
    this.type = event.type;
    this.which = event.which;
  }
  
}

/**
a list of values available via KeyboardEvent
  altKey: boolean
  bubbles: boolean
  cancelBubble: boolean
  cancelable: boolean
  charCode: number
  code: string
  ctrlKey: boolean
  currentTarget: null
  defaultPrevented: boolean
  detail: number
  eventPhase: number
  isTrusted: boolean
  isTrusted: boolean
  keyCode: number
  keyIdentifier: string
  keyLocation: number
  location: number
  metaKey: boolean
  path: array
  repeat: boolean
  returnValue: boolean
  shiftKey: boolean
  sourceCapabilities: string
  srcElement: any
  target: any
  timeStamp: number
  type: string
  view: string
  which: number
*/

Ref: http://stackoverflow.com/questions/36695922/angular-2-keyboard-events