How do I enable a submit button after a radio button is selected?

Question

I am writing a Perl CGI script.

At first the submit button is disabled, it should be enabled when any of the radio button is selected. A radio button exists for each corresponding row (same name).

Answer 1

This is more probably a JavaScript question, unless you wan to reload the page with a submit button enabled. But you can specify JavaScript events in CGI.

For a radio group, it's just a little trickier. Since the radio_group sub allows attributes per item, you just have to specify the same event for each selection.

my @values = qw<eenie meenie minie>;
my $enableSubmit 
    = { -onClick => q[document.getElementById('mySubmitButton').disabled = false;] }
    ;
print CGI->radio_group(
      -name       => 'group_name'
    , -values     => \@values
    , -default    => 'meenie'
    , -linebreak  => 'true'
    , -labels     => { map { $_ => ucfirst } @values }
    , -attributes => { map { $_ => $enableSubmit } @values } 
    );