Please ask the teacher and the master to clear up the doubts. If you remove the first piece of data, it can be submitted without removing the prompt.
Unsupported data expression:/index/grade/doadd_html
It's not the address I want to submit, it's generated by him himself.
What the hell is your address? . . /index/grade/doadd.html is the address you want to submit. It shouldn’t be placed in the action. Why submit it together?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
It's not the address I want to submit, it's generated by him himself.
What the hell is your address? . . /index/grade/doadd.html is the address you want to submit. It shouldn’t be placed in the action. Why submit it together?