Redirect the user is cookie is set....

CookieRedirect.js

/*
Suppose you have stored the Data at server side;
you can generate a random Hash for client side
and redirect to another URL to restore the state
with the help of that hash

let:
  hash = 95deb5011a8fe1ccf6552bb5bcda2ff0
  //data stored or server against this hash is
  data = {name: "Time to Hack",url: "http://time2hack.com"}
  form_url = http://example.com/form
  retrieve_url http://example.com/form?reload={hash}
  i.e. 
  http://example.com/form?reload=95deb5011a8fe1ccf6552bb5bcda2ff0
*/
function restoreCookie(){
  $('form').each(function(i){ 
    x = $(this).attr('name'); 
    str = $.cookie(x);
    //random validation to verify stored thing as hash
    if( String(str).length == 32 ) {
      window.location = 'http://example.com/form?reload='+str;
      /*
      window.location 
        = 'http://example.com/form?reload=95deb5011a8fe1ccf6552bb5bcda2ff0';
      */
    }
    //else do nothing
    //and let the user fill the form
  });
}