cj.html is the front-end code, panduan.php is the back-end script, and the front-end collects data and transmits it to the back-end for processing. The backend returns the results to the frontend after processing. There are GET, POST, and other methods. The POST method is encrypted transmission. The GET method is transmitted in clear text, and you can see
replyThank you! Then, why do you sometimes just write a php file and you can see the effect in the browser? Doesn't it necessarily require a front-end?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Submitting data and processing code can be in the same php file. It is possible to have front-end and back-end together
cj.html is the front-end code, panduan.php is the back-end script, and the front-end collects data and transmits it to the back-end for processing. The backend returns the results to the frontend after processing. There are GET, POST, and other methods. The POST method is encrypted transmission. The GET method is transmitted in clear text, and you can see
in the browser url box.