quickest way to display data

Question

I have several forms in one HTML page...

I have to filter these forms somewhere... (eg check if all or some form elements have values etc...)

I am using ajax to submit the forms, but i dont know if i should filter it before submitting it to my php file, or filtering it inside the php file?

I want the fastest way for the data to show up....

??????????????

Thanks

Answer 1

Filter in both places. You cannot trust anything the client sends to your server, so always check in a server side script that what they sent is good. But you don't want your client to wait, so check using client side script as well.

Answer 2

Always consider that there are people out there, who have JavaScript deactivated. For them you need to check data at the server side.
Also the checks on JavaScript side could be manipulated (Firebug, etc) so you also have to check the data on the server side for people having JavaScript enabled.

Answer 3

i would at first say that having multiple forms on one page is definitely not the best practice. especially if you're using Ajax to submit forms. use validation on the client-side along with server-side. consider using some framework, which can ease your life and give you some custom solutions.