This is just broken and I can't figure out why. The TodoCtrl function appears unrecognised and yet there are many examples of this working.
https://jsfiddle.net/r0pk793e/15/
I have tried both:
angular.module('App', []).controller("Ctrl", ['$scope', function($scope){
And:
function TodoCtrl($scope) {
All to no avail.
You just need to change this:
To this:
And put information in your ng-app like so: