How to execute a page's javascript function in perl?

Question

I am trying to extract data from a website using Perl. Below is the description of the site:

• site displays data dependent on a date
• a calendar is displayed that is used to change the date
• upon clicking the dates in the calendar, it calls a javascript function that passes in the date and refreshes the part of the page that displays the data

My question is, how do I execute that JS function so that I could loop through the dates that I need data from?

Thanks in Advance

Answer 1

It's much easy make same HTTP request from your script and get all data you need directly.

You can record all HTTP requests/responses of your browser by using HTTP Fox extension (for Firefox).

Answer 2

Edit

There is a CPAN module:

JavaScript - Perl extension for executing embedded JavaScript

But I've not already tested them.

Original post:

Take a look at smjs it's Spidermonkey's JS shell.

You could pass javascript by:

open my $jsout,"echo '$javascript' | smjs |" or die;
print <$jsout>;

...

But be care! This take security consideration away!