Why does the server verify that the form is empty and the client still needs to verify it?
꯭J꯭i꯭m꯭2019-08-03 01:27:23
0
2
1385
I see that the server has verified that the user's account and password are empty. Why does the client's js have to verify whether the form is empty? I don’t understand!
Double verification is required for security. On the one hand, js verification is to provide a better user experience. On the other hand, if the verification fails, you can skip the procedure and save server-side expenses.
Another program verification is a must. Yes, I can directly use a program to simulate your form submission without going to your front-end page. Do you understand?
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
Double verification is required for security. On the one hand, js verification is to provide a better user experience. On the other hand, if the verification fails, you can skip the procedure and save server-side expenses.
Another program verification is a must. Yes, I can directly use a program to simulate your form submission without going to your front-end page. Do you understand?