Express req get json

Introduction

express req get json is a method in the express framework of Node.js that allows developers to retrieve data from a request in the form of a JSON object. This can be useful when building web applications that require data to be sent to and from the server.

Syntax

app.get('/', function (req, res) {
  const jsonObj = req.query;
});

Parameters

The req parameter of the app.get function is an object that represents the HTTP request. It contains information about the request including the request headers, parameters, and body. The res parameter is an object that represents the HTTP response that is sent back to the client.

Example

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

app.get('/user', function (req, res) {
  const userInfo = {
    name: req.query.name,
    age: req.query.age,
    email: req.query.email
  };
  res.send(userInfo);
});

app.listen(3000, function () {
  console.log('Example app listening on port 3000!');
});

In this example, when the server receives a GET request to the /user endpoint, it retrieves the JSON data from the request using req.query and sends it back to the client in the response body.

Conclusion

The express req get json method is an important feature of the express framework that allows developers to easily retrieve data from requests in the form of JSON objects. This makes it easy to build web applications that require data to be sent to and from the server, and is a valuable tool for front-end and back-end developers alike.