Redirect traffic based on IP Geolocation with IPinfo.io

ipinfo-country-redirect.js

// Define a function named getJSON that takes a URL and a callback function as parameters
var getJSON = function(url, callback) {
  // Create a new XMLHttpRequest object
  var xhr = new XMLHttpRequest();
  // Open a GET request to the specified URL asynchronously
  xhr.open('GET', url, true);
  // Specify the expected response type as JSON
  xhr.responseType = 'json';

  // Define an event handler for when the request completes
  xhr.onload = function() {
    // Retrieve the HTTP status code from the response
    var status = xhr.status;

    // If the status code is 200 (OK), call the callback function with null as the error and the response data
    if (status == 200) {
        callback(null, xhr.response);
    } 
    // If the status code is not 200, call the callback function with the status code as the error
    else {
        callback(status);
    }
  };

  // Send the request
  xhr.send();
};

// Call the getJSON function with a URL and a callback function
getJSON('http://ipinfo.io/json',  function(err, data) {
  // If an error occurred during the request, log the error to the console
  if (err != null) {
    console.error(err);
  } 
  // If no error occurred
  else {
    // If the country retrieved from the data is not "US", redirect to a URL for non-US visitors
    if (data.country != "US") {
      window.location.replace("http://example.com/global");
    } 
    // If the country is "US", redirect to a URL for US visitors
    else {
      window.location.replace("http://example.com/us");
    }
  }
});