Charan Cherry Charan Cherry - 2 months ago 6
Javascript Question

Getting request.body value undefined in nodejs?

my front end code:

console.log('In front end ', UserDetails.fname);
$.ajax({
type: 'POST',
data: UserDetails.fname,
url: 'http://localhost:3000',
success: function(data){
console.log('Success!!');
},
error: function(error){
console.log('Error!!');
}
})


In first console line the
UserDetails.fname
printing correctly. But when I send it to the back end, the back end shows it as
undefined
.

my back end code

var express = require('express');
var mysql = require('mysql');
var bodyParser = require('body-parser');
var userId = 1;
var conn = mysql.createConnection({
host: 'localhost',
user: 'root',
password: '',
database: 'facebook'
});

conn.connect(function(err){
if(!err){
console.log('Database connection success...');
} else {
console.log('Failed to connect to database...')
}

});
var app = express();
// Add headers
app.use(function (req, res, next) {
res.setHeader('Access-Control-Allow-Origin', '*');
res.setHeader('Access-Control-Allow-Methods', 'GET, POST, OPTIONS, PUT, PATCH, DELETE');
res.setHeader('Access-Control-Allow-Headers', 'X-Requested-With,content-type');
res.setHeader('Access-Control-Allow-Credentials', true);
next();
});

app.use(bodyParser.json({ type: 'application/*+json' }));
app.use(bodyParser.raw({ type: 'application/vnd.custom-type' }));
app.use(bodyParser.text({ type: 'text/html' }));

app.post("/", function(req, res){
console.log(req.headers);
console.log('body: ' + JSON.stringify(req.body));
res.send(req.body);
});
app.listen(3000);


I have updated my code. But still I have the same probelm.

Answer

Make sure to put your body-parser code above all the routes

var bodyParser = require('body-parser');

var app = express();
app.use(bodyParser.json());
app.use(bodyParser.urlencoded({ extended: false }));
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