Help.. get latitude and longitude from gmaps

tutorials
1

hello , im very new in ionic , i created a page with maps and how to get latitude and longitude from current position and show in input text

this my home.html :

Get Location

and this my home.ts

export class HomePage {

@ViewChild(‘map’) mapElement: ElementRef;
map: any;

constructor(public navCtrl: NavController, public geolocation: Geolocation) {

}

ionViewDidLoad(){
this.loadMap();
}

loadMap(){{

this.geolocation.getCurrentPosition().then((position) => {
let usersLocation = {
  lat: position.coords.latitude, 
  lng: position.coords.longitude
};
  let latLng = new google.maps.LatLng(usersLocation);

  let mapOptions = {
    center: latLng,
    zoom: 15,
    mapTypeId: google.maps.MapTypeId.ROADMAP
  }

  this.map = new google.maps.Map(this.mapElement.nativeElement, mapOptions);

}, (err) => {
  console.log(err);
});

}
}

addMarker(){

let marker = new google.maps.Marker({
map: this.map,
animation: google.maps.Animation.DROP,
position: this.map.getCenter()
});

let content = “

Information!

”;

this.addInfoWindow(marker, content);

}
addInfoWindow(marker, content){

let infoWindow = new google.maps.InfoWindow({
content: content
});
google.maps.event.addListener(marker, ‘click’, () => {
infoWindow.open(this.map, marker);
});
}
getLocation(){

}
}