The Firefox browser supports javascript.

LiveHttpHeaders addon shows you the HTTP Request that gets sent so you don't have to reverse-engineer the javascript.

Then simply get Mechanize to send the same HTTP Request, either through Mechanize calls, or by crafting a custom HTTP::Request.

Or simply use WWW::Mechanize::Firefox.

No, these instructions are not a solution to the OPs exact problem (not a fish), instead, they're the solution to every such problem (instructions on how to fish).

Like Corion says, javascript is not magical


In reply to Re^5: can't get WWW::Mechanize to sign in on JustAnswer by Anonymous Monk
in thread can't get WWW::Mechanize to sign in on JustAnswer by Anonymous Monk

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