javascript body parser code example

Example 1: body parser express

//make sure it is in this order
npm i body-parser

const express = require('express')
const bodyParser = require('body-parser')

const 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))
})

Example 2: 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))})

Example 3: urlencoded json express

var express = require('express')

var app = express()

app.use(express.json()) // for parsing application/json
app.use(express.urlencoded({ extended: true })) // for parsing application/x-www-form-urlencoded

app.post('/profile', function (req, res, next) {
  console.log(req.body)
  res.json(req.body)
})

Example 4: body parser

<script>
const bodyParser = require("body-parser");

app.use(bodyParser.urlencoded({extended:true}));
  
app.post("/", function(req, res){
  let firstName = req.body.fNAME;
  
});
</script>

<input type="text" name="fNAME" placeholder="First Name">