Why doesn't the PassportJS code work?

Question

JavaScript

Why the code does not work with off. site, slightly modified?

app.get("/login", function(req, res, next) {
  passport.authenticate("local", function(err, user, info) {
    if (err) {
      return next(err);
    }
    if (!user) {
      return res.render("login");
    }
    req.logIn(user, function(err) {
      if (err) {
        return next(err);
      }
      return res.redirect("/");
    });
  })(req, res, next);
});

On login, we check if the user is logged in. If not, we render the login page, if yes, we redirect to the main page.
Why does not it work?

Answer 1

wang that is not connected correctly