Get My Web App Base URL in JavaScript

Question

How could I get my web App URL in Node.js? I mean if my site base url is http://localhost:8080/MyApp How could I get it?

Thanks,

Answer 1

You must connect 'url' module

var http = require('http');
var url = require('url') ;

http.createServer(function (req, res) {
  var hostname = req.headers.host; // hostname = 'localhost:8080'
  var pathname = url.parse(req.url).pathname; // pathname = '/MyApp'
  console.log('http://' + hostname + pathname);

  res.writeHead(200);
  res.end();
}).listen(8080);

UPD:

In Node.js v8 url module get new API for working with URLs. See documentation :

Note: While the Legacy API has not been deprecated, it is maintained solely for backwards compatibility with existing applications. New application code should use the WHATWG API.

Answer 2

To get the url like: http://localhost:8080/MyApp

we should use:-

req.protocol+"://"+req.headers.host

Answer 3

For getting url details in your node apps. You have to use URL module. URL module will split your web address into readable parts

Following I have given the code

var url = require('url');
var adr = 'http://localhost:8080/default.htm?year=2017&month=february';
var q = url.parse(adr, true);

console.log(q.host); //returns 'localhost:8080'
console.log(q.pathname); //returns '/default.htm'
console.log(q.search); //returns '?year=2017&month=february'

var qdata = q.query; //returns an object: { year: 2017, month: 'february' }
console.log(qdata.month); //returns 'february'`enter code here`

To learn more about URL module you can visit https://nodejs.org/api/url.html