const options = {
    enableHighAccuracy: true,
    timeout: 5000,
    maximumAge: 0,
};

function success(pos) {
    localStorage.setItem('position',
        JSON.stringify(pos.coords)
    );
}

function error(err) {
    console.warn(`ERROR(${err.code}): ${err.message}`);
}

navigator.geolocation.getCurrentPosition(success, error, options);

const getCoordinates = () => {
    const parsed = JSON.parse(localStorage.getItem('position'));
    return {
        latitude: parsed.latitude,
        longitude: parsed.longitude,
        accuracy: parsed.accuracy,
        altitude: parsed.altitude,
        altitudeAccuracy: parsed.altitudeAccuracy,
        heading: parsed.heading,
        speed: parsed.speed
    };
}

console.log(`Latitude: ${getCoordinates().latitude}, Longitude: ${getCoordinates().longitude}
Accuracy: ${getCoordinates().accuracy.toFixed()} meters`);