CORS with jQuery and XDomainRequest in IE8/9

POST method is supported, and to make a cross-domain https:// request your calling page would also need to be loaded over https. This is the best article I have found which explains these and other limitations of XDomainRequest in detail:

http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx

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