With the file jello.jshello.js 
var leg = {
aa: "Hello from javascript"
}

function to_json() {
   return JSON.stringify(leg);
}

[download]
And the file perl.pl 
use strict;
use warnings;
use WWW::Mechanize::PhantomJS;
my $js = WWW::Mechanize::PhantomJS->new(launch_exe=> 'C:/prog/phantomj
+s/bin/phantomjs.exe');
$js->get_local("hello.js");
#$js->update_html('<script src="hello.js" type="text/javascript"></scr
+ipt>');
#print $js->content;
#my ($val, $type) = $js->eval_in_page('JSON.stringify(window.leg);');
my ($val, $type) = $js->eval_in_page('to_json()');
print "val: $val, type: $type\n";

[download]
I can't have any meaningfull result from calling eval_in_page either on the leg var directly or via the function.

Can you show me how to have this working ?

Thanks

Update without phantomjs 
use strict;
use warnings;
use Log::Log4perl qw(:easy);
Log::Log4perl->easy_init($ERROR);
use WWW::Mechanize::Chrome;
my $js = WWW::Mechanize::Chrome->new(report_js_errors=>1);
$js->get_local("hello.js");
#$js->update_html('<script src="hello.js" type="text/javascript"></scr
+ipt>');
#print $js->content;
#my ($val, $type) = $js->eval_in_page('JSON.stringify(window.leg);');
my ($val, $type) = $js->eval_in_page('to_json()');
print "val: $val, type: $type\n";

[download]

This gives undef for $val whatever I'm calling: the to_json() function or JSON.stringify directly.

In reply to Re^4: Accessing javascript variable from perl by frazap
in thread Accessing javascript variable from perl by frazap

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