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
Andres Vidoza
9,805 PointsonReadyStateChange vs readyStateChange? What is the difference?
I am currently looking a the documentation for the onReadtSate change property. https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest/onreadystatechange
Is the onReadyStateChange a property that manages the readystatechange event for the XMLHttpRequest Object?
It says in the documentation:
onreadystatechange property contains the event handler (function) to be called when the readystatechange event is fired.
Thank you very much!
2 Answers
Steven Parker
243,200 PointsAs the documentation says, "onReadyStateChange" contains a reference to the function that will be called when the associated event occurs. And "ReadyStateChange" is the name of that event (it's not a variable).
The description might make more sense when you look at some sample code. You'll see it gets assigned with either the name of a function, or assigned to an anonymous function that is defined at the same time.
Andres Vidoza
9,805 PointsGreat, perfect! thank you so much!
Andres Vidoza
9,805 PointsAndres Vidoza
9,805 PointsThank you for your reply. So if I understand, readyStateChange is an event that happens in the DOM when the stateChange changes?
Steven Parker
243,200 PointsSteven Parker
243,200 PointsI would say readyStateChange is an event that happens in the DOM when the readyState changes.