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

Posted by Joel Swensen
Joel Swensen
4,503 Points

http://teamtreehouse.com/library/check-for-the-correct-ready-state problem.

Hi all!

I'm going through the AJAX series and I've come across a problem. The third part of the first exercise simply asks you to document.getElementById('sidebar'); but this causes and error in the workspace. Has anyone come across this?

1 Answer

Chris Freeman
MOD
Chris Freeman
Treehouse Moderator 68,457 Points
Chris Freeman
Chris Freeman
Treehouse Moderator 68,457 Points

In Task 3 or 4, it asks ** Now that the server has responded with the data, you need to add it to the page. First select the div with the ID of 'sidebar'. You can select page elements with IDs like this: document.getElementById('idName');**

This code passes the third task:

var xhr = new XMLHttpRequest();
xhr.onreadystatechange = function() {
  if (xhr.readyState === 4 && xhr.status === 200 ){
    document.getElementById('sidebar');
  }
};
xhr.open('GET', 'sidebar.html');
xhr.send();
Joel Swensen
Joel Swensen
4,503 Points

Thank you Chris! I appreciate it :)