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JavaScript Build a Simple Dynamic Site with Node.js Handling Routes in Node.js User Route

cant get this to behave properly..........help!

so i've written these two handlers:

function home(request , response) { // if URL == "/" && GET // show search if(request.url === "/") { response.writeHead(200, {'content-Type': 'text/plain'}); response.write ("Header\n") response.write ("Search\n") response.end('Footer\n'); } // if URL == "/" && POST // redirect to / :username }

// Handle HTTP route route GET / :username i.e. /chalkers function user(request, response) { //if URL == "/....." var username = request.url.replace("/", " "); if (username.length > 0) { response.writeHead(200, {'content-Type': 'text/plain'}); response.write ("Header\n") response.write ("username + \n") response.end('Footer\n');

    // GET JSON from treehouse

// on "END" 
    // shoiw profile
// on "error"
    // show error


and i keep getting this error!! :

Error: write after end at write_ (_http_outgoing.js:622:15) at ServerResponse.write (_http_outgoing.js:617:10) at Object.user (C:\Users\ellis.corio\Desktop\Dev\Node\server\router.js:21:12) at Server.http.createServer (C:\Users\ellis.corio\Desktop\Dev\Node\server\app.js:13:10) at emitTwo (events.js:126:13) at Server.emit (events.js:214:7) at parserOnIncoming (_http_server.js:619:12) at HTTPParser.parserOnHeadersComplete (_http_common.js:112:17)

Any Ideas/suggestions welcome.