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JavaScript User Authentication With Express and Mongo Sessions and Cookies Creating the Profile Route and Page

Paul Scarpa
Paul Scarpa
1,329 Points
Posted by Paul Scarpa
Paul Scarpa
1,329 Points

Cannot set property 'userId' of undefined

router.get('/', function(req, res, next) {
  req.session.userId = 10101
  console.log(req.session.userId)
});

Produces this in the console:

Express app listening on port 3000 undefined - Cannot set property 'userId' of undefined

Thus any attempt to set the session ID is failing.

Tomas Svojanovsky
Tomas Svojanovsky
26,680 Points

Hello. Have you installed npm install express-session and set up? I think it means you add userId to undefined.