AngularJS Example

HTML

<div ng-app="App1">
  <div ng-app="App1" ng-controller="Ctrl">
      <div ng-bind-html="youtube">
      </div>
       <p>this is a youtube {{youtube}}</p>
    <button ng-click="showContent()">Show the Content</button>
    </div>


</div>

CSS

</style> <!-- Ugly Hack to make remote files preload in jsFiddle --> 
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.10/angular.min.js"></script>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/angularjs/1.2.10/angular-sanitize.js"></script>
<style>

JavaScript

var myApp = angular.module('App1', ['ngSanitize']);

myApp.controller('Ctrl', ['$scope', function($scope){
    $scope.youtube = '<iframe width="560" height="315" src="//www.youtube.com/embed/FZSjvWtUxYk" frameborder="0" allowfullscreen></iframe>';
    $scope.showContent = function () {
        $scope.youtube = '<iframe width="560" height="315" src="//www.youtube.com/embed/FZSjvWtUxYk" frameborder="0" allowfullscreen></iframe>';

    };
}]);