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JavaScript

Posted by Elizabeth Eymann
Elizabeth Eymann
12,209 Points

Uncaught ReferenceError: EXMLHttpRequest is not defined at (index):9

Hello!

I am following along with the "A Simple AJAX Example" and as far as I can see my code is exactly the same as the teacher's, but it is not working. I don't see the same message dynamically displayed with AJAX. In the console, I am getting the error message: Uncaught ReferenceError: EXMLHttpRequest is not defined at (index):9.

Can anyone help?

Snapshot to my code: https://w.trhou.se/ujujyd3tl2

Thanks!

1 Answer

Simon Coates
Simon Coates
8,177 Points
Simon Coates
Simon Coates
8,177 Points

EXMLHttpRequest should probably be XMLHttpRequest. But i think there's another error after that. Commenting out one of the calls to send seems to make things work. So it seemed to work with:

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <link href='//fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
  <link rel="stylesheet" href="css/main.css">
  <title>AJAX with JavaScript</title>
  <script>
    var xhr = new XMLHttpRequest();
    xhr.onreadystatechange = function () {
      if (xhr.readyState === 4) {
        document.getElementById('ajax').innerHTML = xhr.responseText;
      }
    };
    xhr.open('GET', 'sidebar.html');
    function sendAJAX() {
      xhr.send();
      document.getElementById('load').style.display = "none";
    }

    //xhr.send(); // HERE
  </script>
</head>
<body>
  <div class="grid-container centered">
    <div class="grid-100">
      <div class="contained">
        <div class="grid-100">
          <div class="heading">
            <h1>Bring on the AJAX</h1>
            <button id="load" onclick="sendAJAX()">Bring it!</button>
          </div>
          <div id="ajax">

          </div>
        </div>
      </div>
    </div>
  </div>
</body>
</html>
Elizabeth Eymann
Elizabeth Eymann
12,209 Points

Thank you so much, Simon! That was an easier fix than I expected! I tried it in my workspace and it works! :)