what does body parser do

body-parser node

// Express/Connect top-level generic
// This example demonstrates adding a generic JSON and URL-encoded parser as a top-level middleware, which will parse the bodies of all incoming requests. 
// This is the simplest setup.

var express = require('express')
var bodyParser = require('body-parser') 
var app = express() 

// parse application/x-www-form-urlencoded
app.use(bodyParser.urlencoded({ extended: false })) 

// parse application/json
app.use(bodyParser.json()) 

app.use(function (req, res) {
  res.setHeader('Content-Type', 'text/plain')  
  res.write('you posted:\n')  
res.end(JSON.stringify(req.body, null, 2))})

Posted by: Guest on April-01-2020

Source

var express = require('express') var bodyParser = require('body-parser') var app = express() // parseapplication/x-www-form-urlencoded app.use(bodyParser.urlencoded({ extended: false })) // parse application/json app.use(bodyParser.json()) app.use(function (req, res) { res.setHeader('Content-Type', 'text/plain') res.write('you posted:\n') res.end(JSON.stringify(req.body, null, 2))})

//body-parser helps parse json files //you can use body-parser anytime you need to use a form to post //data to a request var bodyParser = require("body-parser"); app.use(bodyParser.urlencoded({extended: true}));

var express = require('express') var bodyParser = require('body-parser') var app = express() // create application/json parser var jsonParser = bodyParser.json() // create application/x-www-form-urlencoded parser var urlencodedParser = bodyParser.urlencoded({ extended: false }) // POST /login gets urlencoded bodies app.post('/login', urlencodedParser, function (req, res) { res.send('welcome, ' + req.body.username) }) // POST /api/users gets JSON bodies app.post('/api/users', jsonParser, function (req, res) { // create user in req.body })

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