Express.js res.redirect() Function

The res.redirect() function redirects to the URL derived from the specified path, with specified status, a 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 retuns an Object.

Installation of express module:



  1. You can visit the link to Install express module. You can install this package by using this command.
    npm install express
  2. After installing the express module, you can check your express version in command prompt using the command.
    npm version express
  3. 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

Example 1: Filename: index.js

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var express = require('express');
var app = express();
var PORT = 3000;
  
// Without middleware
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);
});

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Steps to run the program:

  1. The project structure will look like this:
  2. Make sure you have installed express module using the following command:
    npm install express
  3. Run index.js file using below command:
    node index.js

    Output:

    Server listening on PORT 3000
    
  4. Now open 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

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var express = require('express');
var app = express();
var PORT = 3000;
  
// With middleware
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);
});

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Run index.js file using below command:

node index.js

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

And you will see the following output on your browser:

User Page

Reference: https://expressjs.com/en/5x/api.html#res.redirect




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