validating checkboxes

[monfu]

Dear All,

I have an input form where the user must enter his name, surname, e-mail address and choose from three topics, namely Conference, Leisure or Corporate. He can choose as many as he like, however, he has to choose one before submitting the form.

How can I do the validation on these checkboxes?

I came up with this code:-

If request.form("Conference") = "" then
er = 1
End IF

if er <> 1 then
If request.form("Leisure") = "" then
er = 1
End IF
end if

if er <> 1 then
If request.form("Corporate") = "" then
er = 1
End IF
end if

If er = 1 then
message = "You have to choose at least one check box"
end if

However, how can I stop the form from being submitted?

Thanks for your help and time

[Satishpp]

If request.form("Conference") = "" then
er = 1
End IF

if er <> 1 then
If request.form("Leisure") = "" then
er = 1
End IF
end if

if er <> 1 then
If request.form("Corporate") = "" then
er = 1
End IF
end if

If er = 1 then
message = "You have to choose at least one check box"
end if

What code is that? Clientside or server side? You seem to be confused between client side and server side scripting.

Before submitting the form, i.e. in the client side you dont have access to the request object. It is a server side object.

You should be able to access form controls as
document.<formname>.<controlname>.value

where <formname> and <controlname> have to be replaced with the name of the form and the control respectively.

For a javascript example of what you are trying go to

http://www.w3schools.com/js/tryit.as...s_formvalidate

Satish

[monfu]

Ok thanks mate, I will search for that.