Naive check to determined if the visitor should be shown the GDPR notice.

gdrpCheck.js

function locale(){
 if (navigator.languages != undefined) 
 	return navigator.languages[0]; 
 else 
 	return navigator.language;
}

function showGdprNotice(){

 const gdprCountries = [
   'AT', 'BE', 'BG', 'HR', 'CY', 'CZ', 'DK', 'EE', 'FI', 'FR', 'DE', 'EL', 'HU', 'IE', 'IT', 'LV', 'LT', 'LU', 'MT', 'NL', 'PL', 'PT', 'RO', 'SK', 'SI', 'ES', 'SE', 'UK'
 ]

 const l = locale();
 let country = null;

 if(l.indexOf('-') > -1){
 // we have a locale in the form of lang-CO
   country = l.split("-")[1];
 }

 let showGdprNotice = false;
 if(gdprCountries.indexOf(country.toUpperCase()) > -1){
   showGdprNotice = true;
 }
 return showGdprNotice;
}