request

request

function request(url, response, failure) {

    var request = new XMLHttpRequest();
    var failed = failure || function(){};

    request.open("GET", url, true);

    request.onreadystatechange = function(e) {
      if(request.readyState == 4) {
        if(request.status == 200) {
          response(request.response);
        } else {
          failed(request.response);
        }
      }
    }

    request.send();
  }