The res.redirect() function redirects to the URL derived from the specified path, with specified status, an integer (positive) which corresponds to an HTTP status code. The default status is “302 Found”.
Syntax:
res.redirect([status, ] path)
Parameter: This function accepts two parameters as mentioned above and described below:
- status: This parameter holds the HTTP status code
- path: This parameter describes the path.
Return Value: It returns an Object.
Type of paths we can enter
- We can enter the whole global URL
e.g: https://www.geeksforgeeks.org/
- The path can be relative to the root of the hostname
e.g : /user with relative to http://hostname/user/cart will redirect to http://hostname/user
- The path can be relative to the current URL
e.g : /addtocart with relative to http://hostname/user/ will redirect to http://hostname/user/addtocart
Installation of the express module:
You can visit the link to Install the express module. You can install this package by using this command.
npm install express
After installing the express module, you can check your express version in the command prompt using the command.
npm version express
After that, you can just create a folder and add a file, for example, index.js. To run this file you need to run the following command.
node index.js
Project Structure:
Example 1: Filename: index.js
javascript
const express = require('express');
const app = express();
const PORT = 3000;
app.get('/', function (req, res) {
res.redirect('/user');
});
app.get('/user', function (req, res) {
res.send("Redirected to User Page");
});
app.listen(PORT, function (err) {
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});
|
Steps to run the program:
Make sure you have installed the express module using the following command:
npm install express
Run the index.js file using the below command:
node index.js
Output:
Console Output:
Server listening on PORT 3000
Brwoser Output:
Now open the browser and go to http://localhost:3000/, now on your screen you will see the following output:
Redirected to User Page
Example 2: Filename: index.js
javascript
const express = require('express');
const app = express();
const PORT = 3000;
app.use('/verify', function (req, res, next) {
console.log("Authenticate and Redirect")
res.redirect('/user');
next();
});
app.get('/user', function (req, res) {
res.send("User Page");
});
app.listen(PORT, function (err) {
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});
|
Steps to run the program:
Run the index.js file using the below command:
node index.js
Output:
Console Output:
Now open the browser and go to http://localhost:3000/verify, now check your console and you will see the following output:
Server listening on PORT 3000
Authenticate and Redirect
Browser Output:
And you will see the following output on your browser:
User Page
Reference: https://expressjs.com/en/5x/api.html#res.redirect