Welcome to the Treehouse Community

Want to collaborate on code errors? Have bugs you need feedback on? Looking for an extra set of eyes on your latest project? Get support with fellow developers, designers, and programmers of all backgrounds and skill levels here with the Treehouse Community! While you're at it, check out some resources Treehouse students have shared here.

Looking to learn something new?

Treehouse offers a seven day free trial for new students. Get access to thousands of hours of content and join thousands of Treehouse students and alumni in the community today.

Start your free trial

JavaScript AngularJS Basics (1.x) Controllers and Scope Creating a Controller

Christopher Stuart
seal-mask
.a{fill-rule:evenodd;}techdegree seal-36
Christopher Stuart
Full Stack JavaScript Techdegree Graduate 27,771 Points
Posted by Christopher Stuart
.a{fill-rule:evenodd;}techdegree seal-36
Christopher Stuart
Full Stack JavaScript Techdegree Graduate 27,771 Points

Failed to instantiate module todoListApp due to: Error: [$injector:nomod] Module 'todoListApp' is not available

here's my app.js

angular.module("todoListApp", [])
.controller('mainCtrl', function($scope){
  $scope.helloworld = function() {
   console.log('Hello there! This is the helloworld controller function, in the mainCtrl');
  }
});

and index.html

<!doctype html>
<html lang="en">
<head>
  <title></title>
  <link href='https://fonts.googleapis.com/css?family=Varela+Round' rel='stylesheet' type='text/css'>
  <link href='styles/main.css' rel='stylesheet' type="text/css">
</head>
<body ng-app="todoListApp">
  <h1>My TODOs</h1>
  <div ng-controller="mainCtrl" class="list">
    <input type="checkbox"/>
      <label class="editing-label">My editing level</label>
      <input class="editing-label" type="text"/>
      <div class="actions">
        <a href="">edit</a>
        <a href="" ng-click="helloWorld()">save</a>
        <a href="" class="delete">delete</a>
      </div>
  </div>

  <script src="vendor/angular.js" type="text/javascript"></script>
  <script src="scripts/app.js" type="text/javascript"></script>

</body>
</html>
Kresimir Fijacko
Kresimir Fijacko
6,025 Points
Kresimir Fijacko
Kresimir Fijacko
6,025 Points

It looks like typo mistake - names should be in camelCase:

take a look at app.js : 

$scope.helloworld = function() {

this should be

$scope.helloWorld = function () {

1 Answer

Justin Jones
Justin Jones
12,868 Points
Justin Jones
Justin Jones
12,868 Points

In your $scope.helloWorld function, you're missing the necessary semi colon at the end of it :).

$scope.helloworld = function() { console.log('Hello there! This is the helloworld controller function, in the mainCtrl'); }; <----------