I have very simple node.js server which has
var express = require('express');
var app = express();
app.post('/savearticles', function (req, res) {
res.send(req.body);
});
and not much more difficult javascript code
var xmlHTTP = new XMLHttpRequest();
xmlHTTP.onreadystatechange = function () {
if (this.readyState === 4 && this.status === 200) {
alert(xmlHTTP.responseText);
}
}
xmlHTTP.open('POST', '/savearticles', true);
xmlHTTP.setRequestHeader('Content-Type', 'application/json');
xmlHTTP.send('postparameter');
It returns undefined (checked by returning (typeof res.body)). What am I doing wrong?
You are missing the body-parser middleware. Install it and your code should work correctly.
const express = require('express')
const bodyParser = require('body-parser')
const app = express()
app.use(bodyParser.urlencoded({ extended: true }))
app.use(bodyParser.json())
app.post('/savearticles', (req, res) => {
res.send(req.body)
})