How To Install Express Gate

Express.js req.body Property

The req.body property contains primal-value pairs of data submitted in the request body. Past default, it is undefined and is populated when y'all use a middleware chosen body-parsing such as express.urlencoded() or limited.json().

Syntax:

req.body

Parameter: No parameters.

Return Value: Object

Installation of express module:

1. You lot can visit the link to Install express module. You can install this package by using this command.

   npm install express

2. Subsequently installing the limited module, you lot tin can cheque your limited version in control prompt using the command.

   npm version express

3. After that, you tin only create a binder and add a file for example, index.js. To run this file yous need to run the post-obit command.

   node index.js

Example 1: Filename: index.js

var express = require( 'express' );

var app = express();

var PORT = 3000;

app.use(limited.json());

app.use(limited.urlencoded({ extended: true }));

app.post( '/profile' , function (req, res) {

console.log(req.body);

res.transport();

});

app.heed(PORT, office (err){

if (err) console.log(err);

console.log( "Server listening on PORT" , PORT);

});

Steps to run the program:

1. The project structure will wait similar this:
   
2. Make certain yous accept installed limited module using the following command:

   npm install express

3. Run alphabetize.js file using below command:

   node index.js

   Output:

   Server listening on PORT 3000              

4. Now brand Mail service request to http://localhost:3000/profile with following trunk:

                   {      "title":"Greetings from GeeksforGeeks"  }              

   Now you lot tin can see the following output on your panel:

   Server listening on PORT 3000 { title: 'Greetings from GeeksforGeeks' }              

Case 2: Filename: index.js

var express = crave( 'express' );

var app = limited();

var PORT = 3000;

app.use(limited.json());

app.use(express.urlencoded({ extended: true }));

app.post( '/signup' , function (req, res) {

var information = req.body;

console.log( "Name: " , data.proper name);

console.log( "Age: " , data.age);

console.log( "Gender: " , information.gender);

res.transport();

});

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

At present make a POST asking to http://localhost:3000/signup with the following request torso:

            {      "name": "Gourav",      "age": 13,      "gender":"Male"  }          

Output: At present you will see the following output on your console screen:

Server listening on PORT 3000 Proper name:  Gourav Age:  13 Gender:  Male          

Reference: https://expressjs.com/en/4x/api.html#req.body

Source: https://www.geeksforgeeks.org/express-js-req-body-property/

Posted by: rojastingettere.blogspot.com

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