Modifying the content of the front-end HTML file according to the data retrieved from express-session

I've been working on creating a login page for my web application using express-session. So far, I've successfully implemented the functionality to validate login credentials.

After confirming a valid login, I execute the following code within the app.post() method.

request.session.loggedIn = true
request.session.username = data[0].account_user
response.redirect('/')

When redirected to the home page, I'm wondering how I can access the values of these variables and update the frontend accordingly.

My goal is to display login/signup buttons if no user is logged in, and to hide them and show the user's username if they are logged in.

javascriptexpressweb-applicationsexpress-session

Answer №1

One effective method is to directly set your req.session variables in your login route rather than attaching them via app.post().

Upon successful login, respond with 

res.status(200).json([the data you want to send])
. On the front end, validate the result for a specific status code - based on this, you can set a localStorage variable and/or redirect the user to the homepage using location.href("/").

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