解決ajax跨區域訪問報錯問題

Response to preflight request doesn't pass access control check: No 'Access-Control-Allow-Origin' header is present on the requested resource

解決辦法：

安裝nginx，更改nginx.conf文件，加入代碼

location /你的二級目錄 {
            #proxy_set_header Host $host:80;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_pass   這裏輸入你的網址;
}