CODE EXAMPLE FOR JAVASCRIPT

react-geocode

import Geocode from "react-geocode";

// set Google Maps Geocoding API for purposes of quota management. Its optional but recommended.
Geocode.setApiKey("xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx");

// set response language. Defaults to english.
Geocode.setLanguage("en");

// set response region. Its optional.
// A Geocoding request with region=es (Spain) will return the Spanish city.
Geocode.setRegion("es");

// set location_type filter . Its optional.
// google geocoder returns more that one address for given lat/lng.
// In some case we need one address as response for which google itself provides a location_type filter.
// So we can easily parse the result for fetching address components
// ROOFTOP, RANGE_INTERPOLATED, GEOMETRIC_CENTER, APPROXIMATE are the accepted values.
// And according to the below google docs in description, ROOFTOP param returns the most accurate result.
Geocode.setLocationType("ROOFTOP");

// Enable or disable logs. Its optional.
Geocode.enableDebug();

// Get address from latitude & longitude.
Geocode.fromLatLng("48.8583701", "2.2922926").then(
  (response) => {
    const address = response.results[0].formatted_address;
    console.log(address);
  },
  (error) => {
    console.error(error);
  }
);

// Get formatted address, city, state, country from latitude & longitude when
// Geocode.setLocationType("ROOFTOP") enabled
// the below parser will work for most of the countries
Geocode.fromLatLng("48.8583701", "2.2922926").then(
  (response) => {
    const address = response.results[0].formatted_address;
    let city, state, country;
    for (let i = 0; i < response.results[0].address_components.length; i++) {
      for (let j = 0; j < response.results[0].address_components[i].types.length; j++) {
        switch (response.results[0].address_components[i].types[j]) {
          case "locality":
            city = response.results[0].address_components[i].long_name;
            break;
          case "administrative_area_level_1":
            state = response.results[0].address_components[i].long_name;
            break;
          case "country":
            country = response.results[0].address_components[i].long_name;
            break;
        }
      }
    }
    console.log(city, state, country);
    console.log(address);
  },
  (error) => {
    console.error(error);
  }
);

// Get latitude & longitude from address.
Geocode.fromAddress("Eiffel Tower").then(
  (response) => {
    const { lat, lng } = response.results[0].geometry.location;
    console.log(lat, lng);
  },
  (error) => {
    console.error(error);
  }
);