Get the browser geolocation

getCoordinates.js

var getCoords = function (options) {
  return new Promise(function (resolve, reject) {
    navigator.geolocation.getCurrentPosition(resolve, reject, options);
  });
}

var geo_options = {
  enableHighAccuracy: true,
  maximumAge        : 30000,
  timeout           : 27000
};

getCoords(geo_options)
  .then((position) => {
    console.log("With Geo Options");
    console.log(position.coords.latitude, position.coords.longitude);
  })
  .catch((err) => {
    console.error("Something is wrong: ",err.message);
  });