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JavaScript AJAX Basics (retiring) Programming AJAX Check for the correct ready state

Posted by Jeremy Smalley
Jeremy Smalley
8,529 Points

Did I type it wrong or is he asking for something that wasn't or didn't make sense in the video again?

Add a conditional statement inside the onreadystatechange event handler that tests to make sure the server has sent back its complete response.

Hmmmm? I cant understand this guys videos when it comes to the tasks and quiz's. Am I missing something?

app.js 
var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
  if (xhr.readyState === 4) {
      if (xhr.status === 200) {
        document.getElementById('ajax').innerHTML = xhr.responseText;
      } else {
        alert(xhr.statusText);
      }
};
xhr.open('GET', 'sidebar.html');
xhr.send();
index.html 
<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
  <title>AJAX with JavaScript</title>
  <script src="app.js"></script>
</head>
<body>
  <div id="main">
    <h1>AJAX!</h1>
  </div>
  <div id="sidebar"></div>
</body>
</html>

1 Answer

Nick Ocampo
Nick Ocampo
15,661 Points
Nick Ocampo
Nick Ocampo
15,661 Points

Hey Jeremy,

It looks like you're missing a closing curly bracket to close out the first if statement.