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

Alonso Serrano
Alonso Serrano
15,341 Points

Why is camel case used for readyState but not for onreadystatechange?

They're both properties of the XHR object. What gives?

1 Answer

Greg Kaleka
Greg Kaleka
39,021 Points

I have no idea...

However, this stranger on the internet says that events are usually lowercase, while other stuff isn't. Sounds roughly right to me :).

In this specific case, readyState is a property, but onreadystatechange is an event.

Cheers :beers:

-Greg