Re: Re: How do you pass a perl variable to a Javascript function

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Re: Re: Re: How do you pass a perl variable to a Javascript function by Anonymous Monk on Dec 12, 2003 at 18:54 UTC
Thanks for the feedback folks. BTW: My name is David. MORE BACKGROUND: I have a form in an html page that collects 3 variables. The perl script below uses those variables. I set $try = $FORM_DATA{'fresh'} below, which is the integer variable I want to use in the perl library libprint.pl. #!/usr/bin/perl require "libcgi13.pl"; #library from lesson10 require "libprint.pl"; #print/refresh output &parse_input; &print_header; $MAXSAVE = 20; flock("gdata.txt",2); open(FROMFILE,"<gdata.txt"); while(<FROMFILE>){ push(@everyline, $_); } $longstring = join("",@everyline); @oldentries = split(/<!--NEWENTRY-->/,$longstring); if(@oldentries + 1 >= $MAXSAVE){ pop(@oldentries); } close(FROMFILE); open(TOFILE,">gdata.txt"); seek(TOFILE,0,0); print TOFILE "<!--NEWENTRY-->"; print TOFILE "<font face=arial><b> $FORM_DATA{'name'}: </b>"; print TOFILE " $FORM_DATA{'comments'} </font><br>\n"; shift(@oldentries); foreach $entry (@oldentries) { print TOFILE "<!--NEWENTRY-->"; print TOFILE $entry; } truncate(TOFILE, tell(TOFILE)); close(TOFILE); flock("gdata.txt",8); open(TOFILE,">ctime.txt"); print TOFILE " $FORM_DATA{'fresh'}"; close(TOFILE); $try = $FORM_DATA{'fresh'}; &print_entry(); [download] Now, in libprint.pl (below), I am able to print the integer variable $try (i.e. I know it's there). However, my problem is how do I get a perl variable passed to a javascript function? I've tried passing the value a number of ways but so far I've been unsuccessful. #!/usr/bin/perl sub print_entry { open(TIMEFILE,"<ctime.txt"); while(<TIMEFILE>){ push(@time, $_); } close(TIMEFILE); open(FROMFILE,"<gdata.txt"); print <<ENDHEADER; <head><title>D-Spot Chat Line</title> <script language=javascript> function callrefresh(try){ //time = $time[0]; time = try; millisec = parseInt(time*1000); setTimeout('refresh()',millisec); } function refresh(){ this.location.href = "cout.pl"; } </script> </head> <body bgcolor=dcdcdc onload=callrefresh($try);> <center><font face=Tahoma> <h2>Chat Lounge $try </h2> </font> </center> ENDHEADER while (<FROMFILE>) { print; } close(FROMFILE); } return 1; [download]	[reply] [d/l] [select]

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Re: Re: Re: How do you pass a perl variable to a Javascript function
by Anonymous Monk on Dec 12, 2003 at 18:54 UTC

#!/usr/bin/perl
require "libcgi13.pl"; #library from lesson10 
require "libprint.pl"; #print/refresh output
&parse_input;
&print_header;

$MAXSAVE = 20;
flock("gdata.txt",2);
open(FROMFILE,"<gdata.txt");
while(<FROMFILE>){
    push(@everyline, $_); 
} 

$longstring = join("",@everyline); 
@oldentries = split(/<!--NEWENTRY-->/,$longstring); 

if(@oldentries + 1 >= $MAXSAVE){ 
    pop(@oldentries); 
} 

close(FROMFILE);
open(TOFILE,">gdata.txt"); 

seek(TOFILE,0,0); 
print TOFILE "<!--NEWENTRY-->"; 
print TOFILE "<font face=arial><b> $FORM_DATA{'name'}: </b>"; 
print TOFILE " $FORM_DATA{'comments'} </font><br>\n"; 

shift(@oldentries);
foreach $entry (@oldentries) { 
    print TOFILE "<!--NEWENTRY-->"; 
    print TOFILE $entry;
} 

truncate(TOFILE, tell(TOFILE)); 

close(TOFILE); 
flock("gdata.txt",8); 

open(TOFILE,">ctime.txt"); 
print TOFILE " $FORM_DATA{'fresh'}";
close(TOFILE); 
$try = $FORM_DATA{'fresh'};
&print_entry();
[download]

#!/usr/bin/perl

sub print_entry

{ 
open(TIMEFILE,"<ctime.txt");
while(<TIMEFILE>){
    push(@time, $_); 
} 
close(TIMEFILE);

open(FROMFILE,"<gdata.txt");

print <<ENDHEADER;
<head><title>D-Spot Chat Line</title>
<script language=javascript>

function callrefresh(try){
        //time = $time[0];
        time = try;
        millisec = parseInt(time*1000);
setTimeout('refresh()',millisec); 
} 

function refresh(){
    this.location.href = "cout.pl";
}
</script> 
    </head>

<body bgcolor=dcdcdc onload=callrefresh($try);>
<center><font face=Tahoma>
<h2>Chat Lounge $try </h2>
</font>
</center>

ENDHEADER
    while (<FROMFILE>) {
        print;
    }
close(FROMFILE);
} 
return 1;
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