Empty AngularJS 1.4.8

Empy fiddle for AngularJS

HTML

<div ng-app="myApp">
  <div ng-controller="MyCtrl">
    <h1 ng-class="{'red': title.length >= 10}">
    {{title}}
    </h1>
  </div>
</div>

CSS

.red {
  background-color: red;
}

JavaScript

var myApp = angular.module('myApp', []);
myApp.controller('MyCtrl', ['$scope', function($scope) {
  $scope.title = 'LONG LONG TITLE';
}]);