ylsislove#make-a-little-progress-every-day#nodejs-服务端解决跨域问题1

# nodejs-http请求头和响应头 ```js router.param('id', (req, res, next, id) => { req.params = { id } // 设置允许跨域的域名*代表允许任意域名跨域 res.setHeader("Access-Control-Allow-O