允许跨域

location / {
            root   html;
            index  index.html index.htm;
            try_files $uri $uri/ /index.html;
            # 设置允许跨域
            add_header Access-Control-Allow-Origin *;
        }

设置不缓存

location / {
            root   html;
            index  index.html index.htm;
            try_files $uri $uri/ /index.html;
            add_header Access-Control-Allow-Origin *;
            if ($request_filename ~* .*\.(?:htm|html|text)$)  {
               # 设置html资源不缓存
               add_header Cache-Control "private, no-store, no-cache, must-revalidate, proxy-revalidate";
            }
        }

设置不缓存后，发现允许跨域失效

查阅资源发现，if 判断下设置add_header，会重置add_header，造成上面设置失效，需要重新设置下允许跨域。最终设置如下：

location / {
            root   html;
            index  index.html index.htm;
            try_files $uri $uri/ /index.html;
            # 设置允许跨域
            add_header Access-Control-Allow-Origin *;
            if ($request_filename ~* .*\.(?:htm|html|text)$)  {
               # 设置html资源不缓存
               add_header Cache-Control "private, no-store, no-cache, must-revalidate, proxy-revalidate";
               # 重新设置允许跨域
               add_header Access-Control-Allow-Origin *;
            }
        }