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"Access-Control-Allow-Origin"= "*" "Access-Control-Allow-Headers"= "X-Requested-With" ‘Access-Control-Allow-Headers‘=‘Content-Type‘ 个人博客：http://www.yixiong.xyz/
"Access-Control-Allow-Origin"= "*" "Access-Control-Allow-Headers"= "X-Requested-With" ‘Access-Control-Allow-Headers‘=‘Content-Type‘
ajax 允许跨域html头设置
原文地址：http://www.cnblogs.com/moonpanda/p/4642175.html
