Angular: Empty Fiddle

http://angularjs.org/

HTML

<script src="http://code.angularjs.org/angular-1.0.0rc6.js"></script>
<div ng-controller="MyCtrl">
    
    Title: <input ng-model="title" />
    <button ngDisabled="true">Update</button>
    <button ng-disabled="title.trim().length>0">Validate</button>

    <hr />
    <button ng-click="title=''">Set title to [] (**error**)</button>
    <button ng-click="title='  '">Set title to [  ]</button>
    <button ng-click="title='  xx  '">Set title to [  xx  ]</button>
    <button ng-click="title='abc'">Set title to [abc]</button>
</div>

JavaScript

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

//myApp.directive('myDirective', function() {});
//myApp.factory('myService', function() {});

function MyCtrl($scope) {
    $scope.title = "";
}