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Express.js – req.xhr Property
The req.xhr property is a Boolean property that returns True when the request's X-Requested-With header field is "XMLHttpRequest". The True pointer basically indicates that the request was issued by a client library such as jQuery.
Syntax
req.xhr
Example 1
Create a file with the name "reqXhr.js" and copy the following code snippet. After creating the file, use the command "node reqXhr.js" to run this code as shown in the example below −
// req.xhr Property Demo Example
// Importing the express module
var express = require('express');
// Initializing the express and port number
var app = express();
// Initializing the router from express
var router = express.Router();
var PORT = 3000;
// Defining an endpoint
app.get('/api', function (req, res) {
console.log("Xhr is: ", req.xhr);
res.send(req.xhr);
});
app.listen(PORT, function(err){
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});Hit the following Endpoint with a GET request − localhost:3000/api
Output
C:\home
ode>> node reqXhr.js Server listening on PORT 3000 Xhr is: false
Example 2
Let's take a look at one more example.
// req.xhr Property Demo Example
// Importing the express module
var express = require('express');
// Initializing the express and port number
var app = express();
// Initializing the router from express
var router = express.Router();
var PORT = 3000;
// Defining an endpoint
app.get('/api', function (req, res) {
console.log("Xhr is: ", req.xhr);
res.send(req.xhr);
});
app.listen(PORT, function(err){
if (err) console.log(err);
console.log("Server listening on PORT", PORT);
});Hit the following Endpoint with a GET request −
http://localhost:3000/api
and set the following headers −
X-Requested-With = XMLHttpRequest
Output
C:\home
ode>> node reqXhr.js Server listening on PORT 3000 Xhr is: true
Updated on: 28-Mar-2022
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