Saturday, July 27, 2019

javascript - nodejs express: store parameters in variable

I am still new with nodejs, still not sure how to access a variable in a function and call the variable back.



check few links: but im getting really confused. Please help!




Node.JS: How to pass variables to asynchronous callbacks?



How can we access variable from callback function in node.js?



var express = require('express');
var app = express();
var router = express.Router();
var https = require('https').createServer( ssl_options, app);
var io = require('socket.io')( https );
**var user_id;

var room_id;**

router.use(function(req, res, next) {
next();
});

app.use('/chat',router);

router.route( '/chat/:user_id/:room_id' )
.get(function(req,res){


res.sendFile( __dirname + '/index.html' );

user_id = req.param('user_id');
room_id = req.param('room_id');

});

https.listen(3000);


io.on('connection', function(socket){

**console.log ( user_id );
console.log ( room_id );**


});

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