Express.js res.status() Function
The res.status() function set the HTTP status for the response. It is a chainable alias of Node’s response.statusCode.
Syntax:
res.status( code )
Parameter: This function accepts single parameter code that holds the HTTP status code.
Returns: It returns an Object.
Installation of express module:
- You can visit the link to Install 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 command prompt using the command.
npm version express
- After that, you can 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
var express = require( 'express' ); var app = express(); var PORT = 3000; // Without middleware app.get( '/user' , function (req, res){ res.status(200).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:
- The project structure will look like this:
- Make sure you have installed express module using the following command:
npm install express
- Run index.js file using below command:
node index.js
Output:
Server listening on PORT 3000
- Now open browser and go to http://localhost:3000/user, on your screen and you will see the following output:
User Page
Example 2:
Filename: index.js
var express = require( 'express' ); const path = require( 'path' ); var app = express(); var PORT = 3000; //with middleware app.use( '/' , function (req, res, next){ res.status(200).send( "Status Working" ); next(); }); app.get( '/' , function (req, res){ console.log( "Home Page!" ) res.send(); }); app.listen(PORT, function (err){ if (err) console.log(err); console.log( "Server listening on PORT" , PORT); }); |
Run index.js file using below command:
node index.js
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 Home Page!
And you will see the following output on your browser screen:
Status Working
Reference: https://expressjs.com/en/5x/api.html#res.status
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