<html>
<script> var xhr = new XMLHttpRequest();
xhr.open('GET', "http://ipinfo.io/json", true);
xhr.send(); xhr.onreadystatechange = processRequest; function processRequest(e) { if (xhr.readyState == 4 && xhr.status == 200) {
var response = JSON.parse(xhr.responseText);
alert(response.ip);
}
} </script>
</html>