javascript - Node.js http server, function can't access response object -

i have following http server code

var server = http.createserver(function (req, response) {     body = "";     req.on("data", function (data) {     body += data;   });   req.on("end", function (){     parserequest(body);   }); }).listen(8080);  var parserequest = function (data) {   try {     jsondata = json.parse(data);     handlerequest(jsondata);   }   catch (e) {     console.log("json parse failed")     console.log(e);     response.writehead(500);     response.end("json parse failed");   } } 

i thought parserequest function should able access it's variables in in parent function's scope. there doing wrong here?

the error is,

response.writehead(500); ^ referenceerror: response not defined 

change to:

req.on("end", function (){     parserequest(response, body); }); 

and then:

var parserequest = function (response, data) { ... 

and can access response. ;)