rainforestQA-follow function

gistfile1.txt

var getJSON = function(url, callback) {
    var xhr = new XMLHttpRequest();
    xhr.open('GET', url, true);
    xhr.responseType = 'json';
    xhr.onload = function() {
      var status = xhr.status;
      if (status === 200) {
        callback(null, xhr.response);
      } else {
        callback(status, xhr.response);
      }
    };
    xhr.send();
};
function follow(data){
    console.log(data);
    if(data.follow)
        getJSON(data.follow.replace('challenge','challenge.json'), function(status,data){follow(data)})
}
follow({follow:"https://www.letsrevolutionizetesting.com/challenge"})