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JavaScript Build a Simple Dynamic Site with Node.js Creating a Basic Template Engine in Node.js Reading from Files

Olu Gbadebo
Olu Gbadebo
Courses Plus Student 516 Points

Console error

When I run the app.js, I get a TypeError message as follows

" TypeError: Cannot read property 'on' of undefined "

and the console points to the '.on' method

" /home/treehouse/workspace/router.js:46
studentProfile.on("error", function(error){
^ "

1 Answer

Erik Nuber
Erik Nuber
20,629 Points

I believe that on is a jquery method so you would have to have jquery linked in your html file. You can do so either by downloading from api.jquery.com or by a CDN which you can find on the same site under the download section.

Olu Gbadebo
Olu Gbadebo
Courses Plus Student 516 Points

Problem still persists. I don't think it's jquery because jquery is not used in NodeJS

Here is my code: '''javascript

var Profile = require("./profile.js"); var renderer = require("./renderer.js");

//2. Handle HTTP route GET / and POST function home(request, response) { //if url == "/" && GET if (request.url == "/") { //show search response.writeHead(200, {'Content-Type': 'Text/plain'}); renderer.view("header", {}, response); response.end("Footer \n"); } } //if url == "/" && POST //redirect to /username

//3. HAndle HTTP route GET /:username function user(request, response){ //if url == "/...." var username = request.url.replace("/", ""); if (username.length > 0) { response.writeHead(200, {'Content-Type': 'Text/plain'});

//get json from Treehouse
var studentProfile = new Profile(username);

//on "end"
studentProfile.on("end", function(profileJSON){
    //show profile

  //store the values we need 

  var values = {
    avatarUrl : profileJSON.gavatar_url,
    username : profileJSON.profile_name,
    badges : profileJSON.badges.length,
    javascriptPoints : profileJSON.points.Javascript

  //simple response
  response.write(values.username + " has " + values.badges + " badges\n");
  response.end("Footer \n");

} //on "error" studentProfile.on("error", function(error){ //show error response.write(error.message + "\n"); response.end("Footer \n"); }); } module.exports.home = home; module.exports.user = user; '''