如何结合ajax和CORS将json请求发送到另一个域

I have been trying to get info from a webservice hosted on another domain. Originally i only used ajax, but then i realised that this doesn't work cus of security reasons. Afterwards i learned that i can use CORS to build around this problem, the problem is i don't get it working. Any sugestions?I have been trying to get info from a webservic