Your textarea has no name, so you will need to fetch the textarea as an object and then use the ->value method with that object.

Maybe you want to show us a short self-contained example of how your code fails for you?

I had no idea how to do that. So I dont have have a code to fill the textarea. I tried your suggestion and I got an error. Is it possible to edit

 <textarea class="placeholder" rows="3"  cols="50" placeholder="Place the comment here" > </textarea>

to

 <textarea class="placeholder" rows="3"  cols="50" placeholder="Place the comment here" > MY COMMENT </textarea>

through WWW::Mechanize::Firefox so that firefox will update the textarea accordingly?

See the documentation of the ->value method in WWW::Mechanize::Firefox:

$mech->value( $textarea, 'BUY GENERIC VIAGRA' );
[download]

As an aside, I suggest you find the author of that page, if possible, and wring his neck for being so brain-dead as to not use id or name tags on page elements. If it is not possible to do that, and if you have the ability to maintain the page, I suggest going through and putting id's and names on every element.

This is not my page. It is some website on the internet.

This is not my page. It is some website on the internet.

Then find out some author of that page? :)

Cheers, Sören

Créateur des bugs mobiles - let loose once, run everywhere.
(hooked on the Perl Programming language)

my $textarea = $mech->xpath('//textarea', one => 1);
$textarea->value("somevalue");
[download]

I guess this is the solution that Corion suggested (to fetch the textarea as an object and then use the ->value method). I used this code trying both the absolute xpath and '//textarea' (the page has only one textarea).

line 52 my $textarea = $mech->xpath('//textarea', one => 1);

line 53 $textarea->value("somevalue");

I got the below error-

MozRepl::RemoteObject: TypeError: f.apply is not a function at getpage.pl line 53