The relevant source code has been downloaded, please go to the course page: click: Courseware, you can see it. You should know it after you read the source code
500, server-side failure, no data returned, please check the method in the controller. Check to see if the parameters submitted by the front end are received. You can use dump($request->param());exit; in the method to print the received data.
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
The relevant source code has been downloaded, please go to the course page: click: Courseware, you can see it. You should know it after you read the source code
500, server-side failure, no data returned, please check the method in the controller. Check to see if the parameters submitted by the front end are received. You can use dump($request->param());exit; in the method to print the received data.
Use ajax to log in, debug with breakpoints, F12 to see what data is displayed on the network (Google is netword)