Angular: Empty Fiddle
http://angularjs.org/
HTML
<script src="http://code.angularjs.org/angular-1.0.1.js"></script>
<div ng-controller="MyCtrl">
<input type="datetime-local" ng-model="myDemo" />
</div>
JavaScript
var myApp = angular.module('myApp',[]);
function MyCtrl($scope) {
var myDate = new Date().toISOString();
$scope.myDemo = myDate.substring(0,myDate.length-1);
}