Now user can search by both coordinates and address.

submit-google-map.js

if((/[a-z]/i.test(address))){

    this.geocoder.geocode({'address': address}, function (results, status)
    {
        if ( status == window.google.maps.GeocoderStatus.OK )
        {
            that.updatePositionInput(results[0].geometry.location);
            that.marker.setPosition(results[0].geometry.location);
            that.map.setCenter(that.marker.position);
            that.map.setZoom(15);
        }
    });

}else{

    const latLngStr = address.split(',', 2),
    newLatLang = new window.google.maps.LatLng( latLngStr[0], latLngStr[1] );

    this.geocoder.geocode({ 'latLng': newLatLang }, function (results, status) {

        if (status === google.maps.GeocoderStatus.OK) {

            that.updatePositionInput(newLatLang);
            that.marker.setPosition(newLatLang);
            that.map.setCenter(that.marker.position);
            that.map.setZoom(15);

            document.getElementById('address').value= results[0].formatted_address;
        }
    });

}