If you revisit the page, the page counter will increase. Now if you run the app and go to localhost:3000, the following output will be displayed. Next time the user comes, the cookie is checked and the page_view session variable is updated accordingly. Use session code#What the above code does is, when a user visits the site, it creates a new session for the user and assigns them a cookie. Res.send("Welcome to this page for the first time!") Res.send("You visited this page " + _views + " times") Var session = require('express-session') Īpp.use(session()) Var cookieParser = require('cookie-parser') In the following example, we will create a view counter for a client. We can add more properties to the session object. Whenever we make a request from the same client again, we will have their session information stored with us (given that the server was not restarted). The session middleware handles all things for us, i.e., creating the session, setting the session cookie and creating the session object in req object. Never use this in production environments. In this example, we will use the default store for storing sessions, i.e., MemoryStore. We will put the session and cookie-parser middleware in place. Use session install#We will need the Express-session, so install it using the following code. Information associated with the client is stored on the server linked to this ID. You assign the client an ID and it makes all further requests using that ID. But they are both readable and on the client side. Cookies and URL parameters are both suitable ways to transport data between the client and the server.
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