NodeExpressRESTfulAPI.js

//
var express = require('express');
var app = express();

app.all('*', function(req, res, next) {
  res.header("Access-Control-Allow-Origin", "*");
  res.header("Access-Control-Allow-Headers", "X-Requested-With");
  next();
 });

app.get('/', function(req, res){
    res.send('Hello World');
});

app.get('/myTestAPI', function(req, res){
    var a = (req.query.argOne);//getting param from the request
    var b = (req.query.argTwo);
    var resultOBJ = {'responseText':'this is success','someMoreData':'Extra data'};
    res.send(resultOBJ);
});

var server = app.listen(3001, function() {
    console.log('Listening on port %d', server.address().port);
});

//call from frontend
$.ajax({
url: reqURI,
type: "GET",
cache: false,
data: { 'argOne':'First Data', 'argTwo':'more Data'},
dataType: "json",
success: function(result) {
console.log(result);
},
error: function(error) {
console.log('AJAX : ERROR : Problem With server ');
console.log(error);
}
});