Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript AJAX Basics (retiring) AJAX Concepts A Simple AJAX Example

Prerna Jena
Prerna Jena
384 Points

Not working

Uncaught TypeError:Cannot set property 'innerHTML' of null at XMLHttpRequest.xhr.onreadystatechage.

2 Answers

Hi Prerna

You need to post your code in between two sets of three backticks so we can help you. See the markdown cheatsheet below. I have noticed that you missed out the 'n' in onreadystatechage => onreadystatechange. But I don't think thats your problem.

Null means basically that something doesn't exist, or that it at least cannot find a reference to it. Check the spelling of all your variables/functions first.

Hope this helps Happy coding

Paul