Argument ... is not a function, got undefined

Question

I'm playing with AngularJS, but I'm getting an error message: Argument 'Controller' is not a function, got undefined Here's the JSFiddle, and HTML code:

<h2>Hata's Tree-Like Set</h2>
<div ng-app ng-init="N=3;" ng-controller="Controller">
<input type="range" min="1" max="10" step="1" ng-model="N">  
<div class="tree"></div>
</div

Then I define the Controller function in JavaScript, which is not registering for some reason.

function Controller($scope){
$scope.$watch("N", function(){  ... });}

Answer 1

I had exactly the same error: argument 'HelloCtrl' is not a function, got undefined.

Turns out I had a syntax error in my hello.js file... a missing comma in an array definition, inside HelloCtrl().

I added the comma, and then everything started working!

Hope this helps.