text: (function() {
      "use strict";
  
      // find the desired selectors
      var btn = document.getElementById("request");
      var bio = document.getElementById("bio");
  
      // set up a request
      var request = new XMLHttpRequest();
  
      // keep track of the request
      request.onreadystatechange = function() {
          // check if the response data send back to us
          if (request.readyState === 4) {
              // add a border
              bio.style.border = "1px solid #e8e8e8";
              // uncomment the line below to see the request
              // console.log(request);
              // check if the request is successful
              if (request.status === 200) {
                  // update the HTML of the element
                  bio.innerHTML = request.responseText;
              } else {
                  // otherwise display an error message
                  bio.innerHTML = "An error occurred during your request: " + request.status + " " + request.statusText;
              }
          }
      };
  
      // specify the type of request
      request.open("Get", "https://s3-us-west-2.amazonaws.com/s.cdpn.io/162656/Bio.txt");
  
      // register an event
      btn.addEventListener("click", function() {
          // hide the button
          this.style.display = "none";
          // send the request
          request.send();
      });
  })();
  