JSFiddle - React, Tailwind, and code Playground

JavaScript

$(document).ready( function() {
    $.getJSON( "http://smart-ip.net/geoip-json?callback=?",
        function(data){            
            console.log(data);
            var c = data.countryCode;
            if(c=="US" || c=="US" )
                alert("American visitor!");else
                    alert("Not american visitor! ("+c+")");
            /*
            this service needs ip
            var ip = data.host;
            alert(ip);
            $.getJSON( "http://freegeoip.net/json/"+ip,
                function(data){
                    console.log(data);
                }
            );*/
        }
    );
    
});