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Alonso Serrano15,341 Points
Why is camel case used for readyState but not for onreadystatechange?
They're both properties of the XHR object. What gives?
Greg Kaleka39,019 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.