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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');
xhr.send();

1 Answer

I see two issues. This:

xhr.readystatechange

should be:

xhr.onreadystatechange

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!!!