JSFiddle - React, Tailwind, and code Playground

HTML

<script src="http://code.angularjs.org/angular-1.0.0rc8.js"></script>
<div ng-app >
<p ng-controller="AppControl">{{isNaNaNumber()}}</p>
</div>

JavaScript

function AppControl($scope){
    $scope.isNaNaNumber = function(){
         return angular.isNaN(NaN);    
    }
}