The last test is unclear/ambiguous

  document.addEventListener('DOMContentLoaded', function(){
    document.getElementById('sendMessage').onclick = function(){

      const userName = document.getElementById('name').value;
      const url = '';
      // Add your code below this line
      var req=new XMLHttpRequest();'POST', url, true);
      req.setRequestHeader('Content-Type', 'application/json; charset=UTF-8');
        if(req.readyState==4 && req.status==201){
        const serverResponse=JSON.parse(req.response);
        document.getElementsByClassName('message')[0].textContent=serverResponse.userName+" "+serverResponse.suffix;
      const SentBody=JSON.stringify({userName, suffix: "loves cats"});
      req.send(SentBody);           //I have used send method

      // Add your code above this line

  body {
    text-align: center;
    font-family: "Helvetica", sans-serif;
  h1 {
    font-size: 2em;
    font-weight: bold;
  .box {
    border-radius: 5px;
    background-color: #eee;
    padding: 20px 5px;
  button {
    color: white;
    background-color: #4791d0;
    border-radius: 5px;
    border: 1px solid #4791d0;
    padding: 5px 10px 8px 10px;
  button:hover {
    background-color: #0F5897;
    border: 1px solid #0F5897;

<h1>Cat Friends</h1>
<p class="message box">
  Reply from Server will be here
  <label for="name">Your name:
    <input type="text" id="name"/>
  <button id="sendMessage">
    Send Message

The code actually works, but fails the last test, which states:

Your code should use the send method.

My code actually uses the send method, and also works fine. After some tweaking I found that using body instead of SentBody variable name, the test passes. This is not very clear from the tests or the problem statement that the variable name should be used as given. Please correct the test description or problem statement to use body.send method. Otherwise make the test independent of the variable name. I would prefer the latter one, personally… :slight_smile:

Challenge: Post Data with the JavaScript XMLHttpRequest Method

Link to the challenge:

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