I actually have 2 questions:-
1- I'm using a form with a POST method. When I click the browser back button (the action of the form is the same page),I get a message from the broswer telling be that it should resend the data again. I'm trying that because if there are errors and users want to press the back button to correct them.
My question is how can I prevent the message from being displayed? for users convenience.
2- How can I prevent users from submitting a form multiple times? I've read some posts talking about putting a unique value (like a value generated by MD5 function) in a hidden field and check that value. Would you please explain that in more details?
Thanks a lot for helping me out solving these problems.