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Start your free trialRobert Cooper
22,704 PointsUnnecessary "if" statement conditional?
In the following code block, isn't it redundant to have req.session
in addition to req.session.userId
? If req.session.userId
evaluates to true, that means that there is a session and req.session
is also true.
function loggedOut(req, res, next) {
if (req.session && req.session.userId) {
return res.redirect('/profile');
}
return next();
}
1 Answer
Joe Beltramo
Courses Plus Student 22,191 PointsIn the code block provided, the use of req.session
first is to prevent front a script error in checking an undefined property.
If req.session
doesn't exist, it becomes unsafe to try and access a property against undefined. Essentially you would be doing this:
var request = undefined;
console.log(request.sessions.userId)
You wouldn't do this as request is not an object, nor does it have a property called session
Robert Cooper
22,704 PointsRobert Cooper
22,704 PointsAwesome, thanks for the explaining Joe. That makes a lot of sense.
Joe Beltramo
Courses Plus Student 22,191 PointsJoe Beltramo
Courses Plus Student 22,191 PointsGlad I could help :]