Express.js res.location() Function

The res.location() function is used to set the response Location HTTP header to the path parameter which is being specified. Basically, it is used to set the response header. It doesn’t end the response, after using it you can write a response body if you want to write.

Syntax:

res.location( path )

Parameter:

• path: It refers to the URL which is specified in the Referrer header of the request.

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:

Filename: index.js

javascript

const express = require('express');
const app = express();
const PORT = 3000;

app.get('/', function (req, res) {
    res.location('http://demo.com');
    console.log(res.get('location')); // http://demo.com
});

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

Browser Output:

Now open the browser and go to http://localhost:3000/, now check your console and you will see the following output:

Server listening on PORT 3000
http://demo.com