Welcome to the Treehouse Community

The Treehouse Community is a meeting place for developers, designers, and programmers of all backgrounds and skill levels to get support. Collaborate here on code errors or bugs that you need feedback on, or asking for an extra set of eyes on your latest project. Join thousands of Treehouse students and alumni in the community today. (Note: Only Treehouse students can comment or ask questions, but non-students are welcome to browse our conversations.)

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and a supportive community. Start your free trial today.

JavaScript AJAX Basics Programming AJAX Processing JSON Data

John Keenan
John Keenan
13,183 Points

Code didn't throw any errors, but employee list fails to display. Is this a problem with how I'm setting up AJAX?

I was coding along with Dave as he went through the steps of the program, and the AJAX request seems to go through, but nothing is displayed in the browser. When I did typeof the xhr object, or tried logging the object in the console, nothing logged out. Any ideas where I'm going wrong?

var xhr = new XMLHttpRequest();
xhr.readystatechange = function () {
  if(xhr.readyState === 4) {
    var employees = JSON.parse(xhr.responseText);
    var statusHTML = '<ul class="bulleted">';
    for (var i = 0; i<employees.length; i+=1) {
      if (employees[i].inoffice === true) {
        statusHTML += '<li class = "in">';
      } else {
        statusHTML += '<li class = "out">';
      statusHTML += employees[i].name;
      statusHTML += '</li>';
    statusHTML += '</ul>';
    document.getElementById('employeeList').innerHTML = statusHTML;
xhr.open('GET', 'data/employees.json');

1 Answer

I see two issues. This:


should be:


and this:

statusHTML =+ '</ul>'

should be:

statusHTML += '</ul>'
John Keenan
John Keenan
13,183 Points

Jimminy Christmas :-O

I didn't even see the error on line 2. Thank you Kris!!!