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Re: Perl variable within Javascript?

Eric --


> This is the last piece of a Perl puzzle, for me. I have a Perl 
> variable $sessionid that holds the value of a user sessionid. I 
> obtained the value by using my Perl script to connect to our catalog 
> through its Web interface. Now, I want to use that variable within 
> some Javascript on a new Web page that the Perl script generates....

TIMTOWDI. In this case you know what the string should look like, so
you don't have to be so careful. A simple:

$html = <<'EOM';
 <HTML>
 <HEAD><TITLE>Patron info link</TITLE>
 <SCRIPT LANGUAGE=Javascript>
   var iwin;
   function instruct()
   {
       iwin =
       window.open("http://www.bobcat.nyu.edu/html/PatronCheck.html%3a%
       3ASESSION_ID", "iwin",
       "width=550,height=450,scrollbars,resizable,status");
   }
 </script>
 <META HTTP-EQUIV="Refresh"
 CONTENT="0;URL=http://www.nyu.edu/library/bobst/database.htm";>
 </HEAD> 
 <BODY onLoad="instruct()">
 <BR>
 </BODY></HTML>
EOM

$html =~s/SESSION_ID/$session_id/g;
print $html;
# or concat $html in another string using the '.' operator, etc.

should do it.

<explanation> 
TIMTOWDI -There is More Than One Way To Do It. If the content were more dynamic
I would suggest anything from building it up with concatenation thru the use of 
Template modules.

<<'EOM'; 
is 'here' quoting; appropriate for multi-line strings.
The single quotes around EOM mean 'don't interpolate'.
The string is ended by EOM as the entire line (that means it is
first in the line and there is nothing, not even space, after it).

We can substitute in the HTML with confidence since most of the
content of $html is known.
</explanation> 

--Derek Lane
dereklane@pobox.com