问题
Is there a cross domain policy restriction for subdomains?
If I have an application on paint.xxxx.com which is manipulating images from image.xxxx.com, are there any cross domain problems?
I'm asking these questions, because I'm considering putting a proxy on a subdomain.
回答1:
yes the cross domain restriction applies for subdomains.
The solution is to put
document.domain = "example.com" ; // whatever your domain name is
in the top of the js file(s) for both the parent domain and the child domain
Google Document.domain and cross site and there should be a better explanation but I've had the same issue and that is what worked for me.
来源：https://stackoverflow.com/questions/16640461/cross-domain-restrictions-and-subdomains