route parameter in node

1var express = require('express');
2var fs  = require('fs');
3var app= express();
4 app.get('/index/profile/:id',function(req,res){
5    //  res.send('profile with id' + req.params.id)
6
7    
8    
9 });
10app.listen(3000,'127.0.0.1');
11console.log('lsitng');