关于 cors 的响应头有哪些
Issue 欢迎在 Gtihub Issue 中回答此问题: Issue 328
Author 回答者: shfshanyue
Access-Control-Allow-Origin
Access-Control-Allow-Methods
Access-Control-Allow-Headers
Access-Control-Allow-Credentials
Access-Control-Expose-Headers
Access-Control-Max-Age
关于如何写一个 cors
的中间件可以参考 koajs/cors