how to run node.js app from cmd with some predefined port in Windows

Question

Is it some command exist to run my node.js code with directly specified port? something like node server.js port=7777 ?

my server.js code looks like this

http.createServer(function (req, res) {
  if (mount(req, res)) return;
}).listen(process.env.PORT || 80);

Answer 1

Depending on what server.js contains you should be able to do so.

At a minimum you should read port (you could use https://github.com/substack/node-optimist)

var argv = require('optimist').argv;
console.log(argv.port);

// use it like this
$ node server.js -port 7777

and then listen to it on your server (this depends on what lib you're using).

Run the server like this

export PORT=7777; node server.js