Javascript / jQuery back button - so long as last page was part of current site?

Question

With the code below I can make a \'back\' button, but is there a way of making the link require that the last page was part of the current site?

$(document).rea         


        

Answer 1

Please don't do this.

But you could use a cookie

psuedo code

if !cookie_exists()
    disable_back_button()
    create_cookie()

Then delete the cookie when the user leaves.

Referrer can be edited, so I don't recommend that

but I also don't recommend doing this at all, its annoying.