Session management can be done in node.js by using the express-session module. It helps in saving the data in the key-value form. In this article, we will see how to count the Number of views in Express Session in Express Js.

Prerequisites:

• Basic knowledge of  Node.
• Node.js installed (version 12+).
• npm installed (version 6+).

Approach

• Use Express.js with express-session to track website visits.
• Store the session data on each visit, incrementing a counter.
• Retrieve and display the count to show the number of visits.

Steps to Count Number of Visits using Express

Step 1: Project SetUp

To set up Node Project in Editor you can see here.

Step 2: Installing requires modules

npm install express
npm install express-session

Step 3: Call API

const session = require('express-session')

Project Structure:

project sructure

Updated dependencies in package.json file

"dependencies": {
    "express": "^4.19.2",
    "express-session": "^1.18.0",
}

Example: This example illustrates the above approach.

// index.js

// Call Express Api.
const express = require('express'),

// Call express Session Api.
session = require('express-session'),

app = express();

// Session Setup
app.use(
    session({

        // It holds the secret key for session
        secret: "I am girl",

        // Forces the session to be saved
        // back to the session store
        resave: true,


        // Forces a session that is "uninitialized"
        // to be saved to the store
        saveUninitialized: false,
        cookie: {
        })
);

// Get function in which send session as routes.
app.get('/session', function (req, res, next) {

    if (req.session.views) {

        // Increment the number of views.
        req.session.views++

        // Print the views.
        res.write('<p> No. of views: '
            + req.session.views + '</p>')
        res.end()
    } else {
        req.session.views = 1
        res.end(' New session is started')
    }
})

// The server object listens on port 3000.
app.listen(3000, function () {
    console.log("Express Started on Port 3000");
});

Run the index.js file using the below command.

node app.js

Now to set your session, just open the browser and type this URL.

http://localhost:3000/session

Output: