My directory look like this:

/config.json , /server.js , /staticFiles/welcome.html

Running server.js gives error:

app.use(express.static(_dirname + /staticFiles));
^ ReferenceError: _dirname is not defined

My Server.js:

//------------Server-------------



var fs = require(fs);

var config = JSON.parse(fs.readFileSync(./config.json));



 console.log(Server UP and running..); 



 var host = config.host;

 var port = config.port;

 var express = require(express);



 var app = express.createServer();







 //---------Application----------------



app.use(app.router);

 app.use(express.static(_dirname + /staticFiles));



app.get(/, function(request,response){



response.send(<h1>/ of TrimServer</h1>);



 });



app.listen(port,host); 

console.log(Listening on Port -->,port);





 //--------------End-------------------